CN221991918U - Indoor unit and heating ventilation equipment - Google Patents

Abstract

The present application provides an indoor unit and a heating and ventilation device. The indoor unit provided by the present application includes a housing and an electric control box. An air duct is formed in the housing. The air duct includes a wind wheel cavity, a pressure diffusion cavity and a heat exchange cavity which are connected in sequence. A wind wheel is arranged in the wind wheel cavity, and a heat exchanger is arranged in the heat exchange cavity. The electric control box is installed on the bottom surface or side surface of the housing so that the electric control box is exposed at the bottom or side of the indoor unit. The electric control box in the indoor unit provided by the present application is easy to inspect and repair.

Description

Indoor unit and heating ventilation equipment

Technical Field

The application relates to the technical field of air conditioners, in particular to an indoor unit and heating ventilation equipment using the same.

Background

In the related art, the indoor unit includes casing, wind wheel and automatically controlled box, and wind wheel and automatically controlled box set up in the casing, and the bottom or the side of casing forms the return air inlet, is provided with the outer return air inlet that corresponds the return air inlet on the ceiling, and the casing of indoor unit has the curb plate along the axial both sides of wind wheel, and the automatically controlled box is installed on the curb plate to need be provided with the outer access hole that corresponds the automatically controlled box position in one side of outer return air inlet on the ceiling in addition, so, then need offer a plurality of openings at the ceiling, and cover the grid in the department of corresponding outer return air inlet and correspond to cover in outer access hole department and cover the board, moreover, when need maintain the indoor unit, need dismouting respectively the apron on the outer access hole and the grid on the outer return air inlet.

Therefore, the indoor unit is not only complicated in construction process, but also inconvenient in the maintenance process of the indoor unit.

Disclosure of utility model

The embodiment of the application provides an indoor unit and heating ventilation equipment, which are used for solving the problems of complex construction procedures and inconvenient maintenance of the indoor unit in the related technology.

In one aspect, the application provides an indoor unit, which comprises a shell, a wind wheel, a heat exchanger and an electric control box; an air duct is formed in the shell and comprises a wind wheel cavity, a diffusion cavity and a heat exchange cavity which are sequentially communicated, the wind wheel is arranged in the wind wheel cavity, and the heat exchanger is arranged in the heat exchange cavity; the electric control box is arranged on the bottom surface or the side surface of the shell, so that the electric control box is exposed at the bottom or the side part of the indoor unit.

As an alternative embodiment, the electric control box is mounted in the middle of the bottom surface of the shell.

As an alternative embodiment, the electric control box is located between the wind wheel cavity and the heat exchange cavity.

As an alternative embodiment, the air duct is provided with an air return port communicated with the wind wheel cavity, and the air return port is formed on the bottom surface or the side surface of the shell; an installation cavity is formed on the bottom surface of the shell between the wind wheel cavity and the heat exchange cavity, and the electric control box is installed in the installation cavity.

As an alternative embodiment, the return air inlet is formed on the bottom surface side of the housing; the installation cavity is formed in the bottom surface of the shell, and the installation cavity is arranged adjacent to the wind wheel cavity.

As an alternative embodiment, the indoor unit has a length direction, a width direction, and a height direction in the installed state; the dimension of the installation cavity in the width direction of the indoor unit gradually decreases in the direction away from the return air inlet.

As an alternative embodiment, the housing includes a water pan and a diffuser lower shell; the water receiving disc defines a cavity bottom wall of the heat exchange cavity and comprises a disc bottom wall and a disc side wall, and the disc side wall is connected between the diffusion cavity lower shell and the disc bottom wall; the disc side wall defines part of the cavity side wall of the mounting cavity, and two opposite sides of the lower shell of the diffusion cavity form the cavity bottom wall of the diffusion cavity and the cavity bottom wall of the mounting cavity; wherein an included angle of greater than or equal to 90 degrees is formed between the cavity bottom wall of the mounting cavity and the cavity side wall of the mounting cavity defined by the disk side wall.

As an alternative embodiment, the cavity side wall of the installation cavity defined by the disk side wall extends in the height direction of the indoor unit, and an included angle is formed between the side wall of the installation cavity and the vertical direction; the chamber bottom wall of the installation chamber extends in the width direction of the indoor unit, and an included angle is formed between the chamber bottom wall of the installation chamber and the horizontal direction.

As an alternative embodiment, the angle between the side wall of the installation cavity and the vertical direction is smaller than the angle between the cavity bottom wall of the installation cavity and the horizontal direction.

As an optional implementation manner, the indoor unit provided by the application further comprises a drain pipe and a refrigerant pipe connected with the heat exchanger, the shell comprises a water receiving disc, the water receiving disc defines a cavity bottom wall of the heat exchange cavity, and the drain pipe is connected with the water receiving disc; the space between the electric control box and the cavity mouth of the installation cavity can be penetrated by a water draining pipe and a refrigerant pipe.

As an alternative embodiment, the housing further comprises two oppositely disposed side plates; each side plate is provided with an outlet pipe notch communicated with the installation cavity, and the refrigerant pipe and the water drain pipe can extend out of the installation cavity through the outlet pipe notch on any side plate.

As an alternative implementation mode, the mouth wall of the pipe notch is in smooth transition.

As an alternative embodiment, a supporting structure is arranged below the pipe notch and is connected with the side plate; wherein the support structure is configured to support a drain pipe and/or a coolant pipe arrangement.

As an alternative implementation mode, a drain groove is arranged on the water receiving disc, and a drain outlet communicated with the drain pipe is formed on one side of the drain groove close to the drain pipe; the depth of the drain groove gradually increases in a direction approaching the drain opening.

As an alternative embodiment, the bottom wall of the drain tank is an inclined wall.

As an alternative embodiment, the housing includes a housing body and a protective grille detachably connected to the housing body, and the installation cavity is formed on the bottom surface of the housing body; one part of the structure of the protective grille is positioned at one side of the wind wheel close to the air return opening, the other part of the structure of the protective grille is positioned between the wind wheel and the electric control box, and the protective grille is detachably connected with the shell body; the protective grille and the shell body are enclosed to form a wind wheel cavity.

As an alternative embodiment, the projection of the protective grille and the projection of the electric control box on the plane of the cavity opening of the mounting cavity are not overlapped with each other.

As an alternative embodiment, the housing body includes a first housing and a second housing connected to each other, the first housing and the second housing cooperatively defining an air duct; the protective grille is detachably connected between the first shell and the second shell.

As an alternative implementation mode, the protective grille comprises a plurality of grille parts which are connected in sequence, and the plurality of grille parts are arranged in an included angle mode.

As an alternative embodiment, the grating portions comprise a first grating portion and a second grating portion; the first grid part is detachably connected with the second shell, and is positioned between the lower part of the wind wheel and the electric control box; the second grid part is detachably connected with the first shell, and is positioned at one side of the wind wheel close to the air return opening; the first grid part is perpendicular to the plane of the cavity opening of the mounting cavity; and/or the second grid part is parallel to the plane of the cavity mouth of the mounting cavity.

As an alternative embodiment, the grating parts include a first grating part, a second grating part, and a third grating part connected in sequence; the first grid part is detachably connected with the second shell, and is positioned between the lower part of the wind wheel and the electric control box; the third grid part is detachably connected with the first shell, and is positioned at one side of the wind wheel close to the air return opening; the included angle between the first grating part and the second grating part and the included angle between the third grating part and the second grating part are obtuse angles; the first grid part is perpendicular to the plane of the cavity opening of the mounting cavity; and/or the third grid part is parallel to the plane of the cavity mouth of the mounting cavity.

As an alternative embodiment, the protective grille is arranged in an arc shape, and the distance between the protective grille and the electric control box gradually increases in the direction towards the cavity opening of the mounting cavity.

As an alternative embodiment, one end of the air duct is provided with an air outlet communicated with the heat exchange cavity; the dimension of the heat exchange cavity in the height direction is gradually reduced in the direction close to the air outlet.

As an alternative embodiment, the inner wall of the heat exchange chamber is smoothly transited in the direction approaching the air outlet.

As an optional implementation manner, the indoor unit provided in this embodiment further includes an electric auxiliary thermal module, and an electric heating tube of the electric auxiliary thermal module is electrically connected with the electric control box; the electric auxiliary thermal module is positioned at one side of the diffusion cavity, which is close to the heat exchange cavity.

As an optional implementation manner, the indoor unit provided in this embodiment further includes a motor and a water pump, an output shaft of the motor is connected with the wind wheel, and the water pump is connected to the housing; the motor and the water pump are positioned on the same side of the electric control box along the length direction of the electric control box.

As an alternative embodiment, the electric control box is detachably connected with the shell through a clamping structure and/or a screw structure.

As an alternative implementation mode, one side of the electric control box along the length direction of the electric control box is detachably connected with the shell through a clamping structure, and the other side of the electric control box along the length direction of the electric control box is detachably connected with the shell through a screw structure; or, the electric control box is detachably connected with one side of the shell along the width direction of the electric control box through a clamping structure, and the electric control box is detachably connected with the other side of the shell along the width direction of the electric control box through a screw structure.

As an alternative embodiment, the electric control box comprises a box body, a box cover and an electric control plate assembly; the box body is detachably connected with the shell, the box cover is detachably connected with the box body, and the box cover and the box body define a containing cavity for containing the electric control plate assembly.

On the other hand, the application provides heating and ventilation equipment, which comprises the indoor unit.

In the indoor unit and the heating and ventilation equipment provided by the embodiment of the application, the electric control box is arranged on the bottom surface or the side surface of the shell, and the electric control box can be exposed out of the indoor unit, so that when the indoor unit needs to be maintained, the wind wheel, the electric control box and the like of the indoor unit can be detached and maintained only after the grille on the outer air return opening is detached, and thus, compared with the scheme in the related art that when the indoor unit needs to be maintained, the grille at the outer air return opening and the cover plate corresponding to the electric control box are detached respectively, the indoor unit in the embodiment of the application has more convenient maintenance operation, and the electric control box can be exposed out of the indoor unit, namely, the wind wheel parts of the electric control box and the indoor unit can be observed through the outer air return opening.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of an indoor unit according to an embodiment of the present application;

FIG. 2 is a schematic perspective view of FIG. 1 from another perspective;

Fig. 3 is an exploded view of an indoor unit according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a first partial structure of an indoor unit according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of an electric control box in an indoor unit according to an embodiment of the present application;

fig. 6 is an exploded view of an electronic control box in an indoor unit according to an embodiment of the present application;

FIG. 7 is an enlarged schematic view of a partial structure at A in FIG. 5;

FIG. 8 is an enlarged schematic view of a partial structure at B in FIG. 5;

FIG. 9 is an enlarged schematic view of a partial structure at C in FIG. 6;

FIG. 10 is an enlarged schematic view of a partial structure at D in FIG. 6;

FIG. 11 is an enlarged schematic view of a partial structure at E in FIG. 6;

FIG. 12 is an enlarged schematic view of a partial structure at F in FIG. 6;

Fig. 13 is a schematic structural diagram of a second partial structure of an indoor unit according to an embodiment of the present application;

FIG. 14 is a cross-sectional view taken at G-G of FIG. 13;

FIG. 15 is an enlarged schematic view of the partial structure at H in FIG. 14;

FIG. 16 is a schematic perspective view of a diffuser lower casing in an indoor unit according to an embodiment of the present application;

FIG. 17 is an enlarged schematic view of a partial structure at I in FIG. 16;

Fig. 18 is a schematic structural diagram of a third partial structure of an indoor unit according to an embodiment of the present application;

FIG. 19 is a cross-sectional view taken along J-J of FIG. 18;

FIG. 20 is an enlarged schematic view of a part of the structure at K in FIG. 19;

FIG. 21 is an enlarged schematic view of a part of the structure at L in FIG. 19;

Fig. 22 is a schematic perspective view of an indoor unit according to another embodiment of the present application;

FIG. 23 is an enlarged schematic view of a part of the structure at M in FIG. 22;

Fig. 24 is a schematic perspective view of an indoor unit according to another embodiment of the present application;

FIG. 25 is an enlarged schematic view of a part of the structure at N in FIG. 24;

fig. 26 is a schematic perspective view of a water pan in an indoor unit according to an embodiment of the present application;

Fig. 27 is a schematic structural diagram of a fourth partial structure of an indoor unit according to an embodiment of the present application;

FIG. 28 is a schematic view of the structure of FIG. 27 in another embodiment;

fig. 29 is a schematic structural view of a fifth partial structure of an indoor unit according to an embodiment of the present application.

Reference numerals illustrate:

1. A housing; 2. a wind wheel; 3. a heat exchanger; 4. an electric control box; 5. a drain pipe; 6. a refrigerant pipe; 7. a thermal insulation sleeve; 8. a motor; 9. a water pump;

10. An indoor unit; 11. a housing body; 12. a protective grille; 41. an electronic control board assembly; 42. a box cover; 43. a case body; 44. a receiving chamber; 45. a connecting wire; 61. an air pipe; 62. a liquid pipe; 20. an electric auxiliary heating module;

111. A first housing; 112. a second housing; 113. an air duct; 121. a grid part; 421. a jack; 422. a first threaded hole; 431. a box body; 432. a plug-in part; 433. flanging;

1111. A wind wheel cavity upper shell; 1112. a diffuser upper housing; 1113. an upper shell of the heat exchange cavity; 1114. a side plate; 1115. a mounting cavity; 1116. a pipe notch; 1117. a support; 1118. a cavity opening; 1121. a water receiving tray; 1122. a diffuser lower housing; 1123. a tray bottom wall; 1124. a tray sidewall; 1125. a fourth threaded hole; 1126. a reinforcing plate; 1127. the first clamping protrusion; 1128. a sixth threaded hole; 1129. a reinforcing column; 1130. the second clamping protrusion; 1140. a drainage channel; 1141. a water outlet; 1131. an air return port; 1132. a wind wheel cavity; 1133. a diffusion chamber; 1134. a heat exchange cavity; 1135. an air outlet; 1211. a first grid part; 1212. a second grid part; 1213. a third grid section; 4311. a third threaded hole; 4312. a first clamping hole; 4313. an avoidance space; 4314. a fifth threaded hole; 4315. a second clamping hole; 4331. and a second threaded hole.

Detailed Description

In the related art, the indoor unit includes casing, wind wheel and automatically controlled box, and wind wheel and automatically controlled box set up in the casing, and the bottom or the side of casing forms the return air inlet, is provided with the outer return air inlet that corresponds the return air inlet on the ceiling, and the casing of indoor unit has the curb plate along the axial both sides of wind wheel, and the automatically controlled box is installed on the curb plate to need be provided with the outer access hole that corresponds the automatically controlled box position in one side of outer return air inlet on the ceiling in addition, so, then need offer a plurality of openings at the ceiling, and cover the grid in the department of corresponding outer return air inlet and correspond to cover in outer access hole department and cover the board, moreover, when need maintain the indoor unit, need dismouting respectively the apron on the outer access hole and the grid on the outer return air inlet. Therefore, the indoor unit is not only complicated in construction process, but also inconvenient in the maintenance process of the indoor unit.

Therefore, the embodiment of the application provides the indoor unit and the heating and ventilation equipment, which are convenient for overhauling the electric control box, so that the heating and ventilation equipment provided by the embodiment of the application has better service performance.

Embodiments of the present application will be described in detail below with reference to the attached drawings and detailed description.

Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of an indoor unit according to an embodiment of the present application, fig. 2 is a schematic perspective view of fig. 1 at another view angle, fig. 3 is an exploded view of an indoor unit according to an embodiment of the present application, and fig. 4 is a schematic structural view of a first partial structure of an indoor unit according to an embodiment of the present application. As shown in fig. 1 to 4, the present embodiment provides an indoor unit 10, including a casing 1, where the casing 1 includes a casing body 11, the casing body 11 includes a first casing 111 and a second casing 112 that are connected together, in this embodiment, the first casing 111 may be connected above the second casing 112, and an air duct 113 is formed by enclosing between the first casing 111 and the second casing 112, where the air duct 113 includes an air return inlet 1131, a wind wheel cavity 1132, a diffusion cavity 1133, a heat exchange cavity 1134 and an air outlet 1135 that are sequentially communicated, a wind wheel 2 is disposed in the wind wheel cavity 1132, and a heat exchanger 3 is disposed in the heat exchange cavity 1134. The indoor unit 10 provided in this embodiment may be installed on a ceiling in an indoor environment, and then an outer air return port is provided on a ceiling corresponding to the air return port 1131, and an air outlet is provided corresponding to the air outlet 1135, during the operation of the indoor unit 10, the wind wheel 2 rotates, and can suck the air flow in the indoor environment, the air flow sequentially enters the wind wheel cavity 1132 through the outer air return port and the air return port 1131, flows out from the air outlet 1135 and the air outlet after passing through the diffusion cavity 1133 and the heat exchange cavity 1134, and exchanges heat with the heat exchanger 3 in the heat exchange cavity 1134, and finally discharges the air flow after temperature change to the indoor environment through the air outlet.

The return air inlet 1131 may be formed on the bottom surface of the casing 1 or may be formed on the side surface of the casing 1; the first housing 111 includes a wind wheel cavity upper case 1111, a diffusion cavity upper case 1112, and a heat exchange cavity upper case 1113 connected together, a bottom surface of the wind wheel cavity upper case 1111 defines a cavity top wall of the wind wheel cavity 1132, a bottom surface of the diffusion cavity upper case 1112 defines a cavity top wall of the diffusion cavity 1133, a bottom surface of the heat exchange cavity upper case 1113 defines a cavity top wall of the heat exchange cavity 1134, and in order to close the air duct 113 in a length direction of the indoor unit 10, the first housing 111 may further include side plates 1114 positioned at both sides of the indoor unit 10 in the length direction.

The up-down direction is the same as the up-down direction in fig. 1 to 4, and the longitudinal direction of the indoor unit 10 is the same as the x-x axis direction in fig. 1 to 3; in addition, in the following description, the first housing 111 is further described as an example above the second housing 112.

Generally, since the indoor unit 10 has different modes in the operation state, an electric control module is required, in some embodiments, the indoor unit 10 further includes the electric control box 4, and since the electric control box in the related art is mounted on the side plate, when the electric control box needs to be overhauled, the grid at the air return opening on the ceiling and the cover plate of the corresponding electric control box on the ceiling need to be removed to overhauling the electric control box 4, so in order to overcome the defect, in the embodiment, the electric control box 4 is mounted on the bottom surface or the side surface of the casing 1, so that the electric control box 4 is exposed at the bottom or the side of the indoor unit 10. Thus, after the grille on the outer air return opening is opened, the electric control box 4 is exposed, and at this time, operations such as overhauling and the like can be performed on the electric control box 4.

Specifically, when the return air inlet 1131 is formed on the side surface of the casing 1, the electric control box 4 is installed on the side surface of the casing 1; when the return air inlet 1131 is formed on the bottom surface of the housing 1, the electronic control box 4 is mounted on the bottom surface of the housing 1, and in this embodiment, the return air inlet 1131 is formed on the bottom surface side of the housing 1, so that the electronic control box 4 is also mounted on the bottom surface of the housing 1. In the following description, the return air inlet 1131 is formed on the bottom surface of the casing 1, and the electronic control box 4 is mounted on the bottom surface of the casing 1.

When the electric control box 4 is mounted on the bottom surface of the housing 1, it is described that the electric control box is mounted on the bottom surface of the second housing 112.

Further, the wind wheel 2 of the present application may be a cross-flow wind wheel, and it can be understood that the cross-flow wind wheel has the characteristics of large air volume, low noise and compact structure of the indoor unit, and further, the casing 1 forms the wind wheel cavity 1132 to realize the installation of the cross-flow wind wheel, so compared with the related art, the present application adopts the form of a centrifugal fan with a centrifugal volute, and the indoor unit of the present application does not need to additionally provide a baffle structure for fixing the centrifugal volute in the air duct 113, so the structure is simplified. In addition, due to the above layout, the present embodiment may also be configured such that the cross-sectional area of the channel of the diffusion cavity 1133 gradually increases in the direction from the wind wheel cavity 1132 to the heat exchange cavity 1134, and the outlet end of the diffusion cavity 1133 is terminated at the inlet end of the heat exchange cavity 1134, that is, the cross-sectional area of the channel of the diffusion cavity 1133 reaches the maximum at the connection with the heat exchange cavity 1134. In the operation process, under the drive of the wind wheel 2, the airflow discharged from the air outlet side of the wind wheel 2 sequentially flows through the diffusion cavity 1133 and the heat exchange cavity 1134 and then is discharged from the air outlet 1135, and when the airflow enters the joint of the diffusion cavity 1133 and the heat exchange cavity 1134, compared with the prior art adopting a centrifugal fan, the airflow is unlikely to swirl, the airflow flows more smoothly, and thus the airflow energy loss is less.

As shown in fig. 4, in some embodiments, in order to reduce the resistance of the air flow during the flowing process and increase the flow rate of the air flow discharged from the air outlet 1135, so that the air flow after heat exchange can accelerate the circulation of the indoor air, the size of the heat exchange cavity 1134 in the height direction of the indoor unit 10 gradually decreases in the direction approaching the air outlet 1135. In this way, during the operation of the indoor unit 10, when the airflow flows in the air duct 113 toward one side of the air outlet 1135, the airflow direction can be guided, so as to reduce the resistance of the airflow during the flowing process, accelerate the flowing speed of the airflow, and improve the cooling or heating efficiency of the indoor unit 10.

Further, the inner wall of the heat exchange cavity 1134 smoothly transitions in a direction approaching the air outlet 1135. In this way, not only is the housing 1 easier to manufacture, but also the resistance to the flow of air during the flow can be further reduced.

The height direction of the indoor unit 10 described above matches the vertical direction in the figure.

Referring to fig. 4, in order to achieve the heating effect of the indoor unit 10, the indoor unit 10 provided in this embodiment should further include an electric auxiliary heating module 20, and electric heating tubes of the electric auxiliary heating modules 8 and 8 are electrically connected with the electric control box 4; the electric assist thermal module 20 is located on a side of the diffusion chamber 1133 adjacent to the heat exchange chamber 1134. In this way, the space of the diffusion cavity 1133 can be used to set the electric auxiliary thermal module 20, so that the structural compactness of the indoor unit 10 provided in this embodiment can be improved.

With reference to fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of an electric control box in an indoor unit according to an embodiment of the present application, and fig. 6 is an exploded view of the electric control box in the indoor unit according to the embodiment of the present application. The function of the electric control box 4 is mainly realized by the electric control board assembly 41 inside the electric control box 4, so that when the electric control box 4 is overhauled, the electric control board assembly 41 is overhauled mainly aiming at the inside electric control board assembly 41, and at the moment, after certain structures of the electric control box 4 are dismantled, the electric control board assembly 41 is exposed, so that the electric control board assembly 41 can be overhauled.

Therefore, the above-mentioned electric control box 4 may further include a box cover 42 and a box body 43 that are detachably connected, where the box cover 42 is connected to one side of the box body 43 facing the external air return port, the box body 43 is detachably connected to the housing body 11, specifically, the box body 43 is detachably connected to the second housing 112, and a containing cavity 44 containing the electric control board assembly 41 is defined between the box cover 42 and the box body 43, and the electric control board assembly 41 is detachably connected to a cavity bottom of the containing cavity 44, that is, the electric control board assembly 41 is detachably connected to the box body 43. Thus, when the electric control box 4 is exposed through the external air return opening, the box cover 42 can be detached from the box body 43, then the electric control board assembly 41 is exposed, and the electric control board assembly 41 can be detached from the box body 43 for overhauling.

It should be noted that, the electric control board assembly 41 and the box 43 may be detachably connected by a threaded fastener, such as a screw. Here, the connection between the electronic control board assembly 41 and the case 43 is not limited.

Referring to fig. 7 and 8, fig. 7 is an enlarged schematic view of the partial structure at a in fig. 5, and fig. 8 is an enlarged schematic view of the partial structure at B in fig. 5. In some embodiments, in order to facilitate connection between the box cover 42 and the box body 43 and improve connection reliability between the box cover 42 and the box body 43, a threaded connection and a clamping connection may be adopted between the box cover 42 and the box body 43.

Specifically, please refer to fig. 9 to 12, fig. 9 is a schematic enlarged view of the partial structure at C in fig. 6, fig. 10 is a schematic enlarged view of the partial structure at D in fig. 6, fig. 11 is a schematic enlarged view of the partial structure at E in fig. 6, and fig. 12 is a schematic enlarged view of the partial structure at F in fig. 6. As shown in the drawings, in some specific embodiments, the jack 421 is disposed on one side of the lid 42 along the length direction of the electronic control box 4, the first threaded hole 422 is disposed on the other side of the lid 42 along the length direction of the electronic control box 4, the box body 43 includes a box body 431, a plugging portion 432 is disposed on one side of the box body 431 along the length direction of the electronic control box 4, the plugging portion 432 faces the center of the box body 43, and the plugging portion 432 can be inserted into the jack 421 and abutted on the lid surface of the lid 42 so as to connect one side of the lid 42 along the length direction of the electronic control box 4 with one side of the box body 43 along the length direction of the electronic control box 4, a flange 433 extending toward the center away from the box body 43 is disposed on the other side of the box body 431 along the length direction of the electronic control box 4, a second threaded hole 4331 is formed on the flange 433, and a threaded fastener such as a screw can sequentially penetrate through the first threaded hole 422 and the second threaded hole 4331 so as to connect the other side of the lid 42 along the length direction of the electronic control box 4 with the other side of the box body 43 along the length direction of the electronic control box 4.

The insertion portion 432 may be a flange formed on the case body 431. Here, the structure of the insertion portion 432 is not particularly limited.

In other embodiments, the engagement structure between the cover 42 and the body 43 may be other. Here, other engagement structures are not limited.

The longitudinal direction of the electronic control box 4 is identical to the longitudinal direction of the indoor unit 10.

In order to facilitate the arrangement of other components or structural members in the indoor unit 10, the electronic control box 4 may be installed in the middle of the bottom surface of the casing 1, that is, it may be understood that the projection area of the electronic control box 4 on the second casing 112 covers the central axis of the second casing 112 along the width direction of the indoor unit 10, and in a specific embodiment, the central axis of the projection area of the electronic control box 4 on the second casing 112 coincides with the central axis of the second casing 112. So, not only be favorable to overall structure to indoor set 10 to lay out, be convenient for confirm the mounted position of automatically controlled box 4 moreover, promote the packaging efficiency of indoor set 10 that this embodiment provided to set up like this and make the focus setting of complete machine more reasonable, more balanced.

When the electric control box 4 is installed at the middle position of the bottom surface of the second casing 112, the wind wheel cavity 1132 and the heat exchange cavity 1134 are respectively located at two sides of the electric control box 4 along the width direction of the indoor unit 10, so that under the condition that the gravity center layout is reasonable, the space formed between the wind wheel cavity 1132 and the heat exchange cavity 1134 can be fully utilized, and the structural compactness of the indoor unit 10 provided by the embodiment can be improved.

The width direction of the indoor unit 10 described above corresponds to the y-y axis direction in fig. 1 to 4.

In order to mount the electric control box 4 on the bottom surface of the second casing 112, a mounting cavity 1115 with an opening facing the lower side of the indoor unit, that is, opposite to the outer return air inlet, may be formed on the bottom surface of the second casing 112 between the wind wheel cavity 1132 and the heat exchange cavity 1134, and both the wind wheel cavity 1132 and the outer return air inlet are communicated with the mounting cavity 1115; the electronic control box 4 is mounted in the mounting cavity 1115. In this way, by forming the installation cavity 1115 at the bottom of the second housing 112, an increase in the size of the indoor unit 10 in the up-down direction can be avoided, so that the overall structural compactness of the indoor unit 10 is strong.

It can be appreciated that when the installation cavity 1115 is formed on the bottom surface of the second housing 112, the electronic control box 4 can dissipate heat of the electronic control box 4 by using the air flow flowing in through the outer air return opening, and in order to make the heat dissipation performance of the electronic control box 4 better, the size of the installation cavity 1115 in the width direction of the indoor unit 10 gradually decreases in the direction away from the outer air return opening, that is, the opening of the air inlet side of the installation cavity 1115 is larger, so that more air flow can flow into the installation cavity 1115 to dissipate heat of the electronic control box 4, and thus the working condition that the electronic components in the electronic control box 4 are in too high temperature for a long time can be effectively reduced, the service life of the electronic components can be prolonged, and the reliability of the electronic components can be ensured.

While the shape of the second housing 112 may be adapted to provide a larger opening on the windward side of the mounting cavity 1115, in some alternative embodiments, the second housing 112 includes a water tray 1121 and a diffuser lower housing 1122 connected together; the water pan 1121 defines a cavity bottom wall of the heat exchange cavity 1134, the water pan 1121 including a pan bottom wall 1123 and a pan side wall 1124 connected together, the pan side wall 1124 being connected between the diffuser cavity bottom shell 1122 and the pan bottom wall 1123; the disk sidewall 1124 defines a partial chamber sidewall of the mounting chamber 1115, with opposite sides of the diffuser chamber lower housing 1122 forming a chamber bottom wall of the diffuser chamber 1133 and a chamber bottom wall of the mounting chamber 1115; wherein the cavity bottom wall of the mounting cavity 1115 forms an included angle of greater than or equal to 90 degrees with the cavity side wall of the mounting cavity 1115 defined by the disk side wall 1124. Like this, then make the opening of installation cavity 1115 be big in the one side size towards outside return air inlet, so, then make the air inlet area of the income wind side of installation cavity 1115 great for more wind can flow to automatically controlled box 4, carries out effective heat dissipation to automatically controlled box 4.

Specifically, the cavity side wall of the installation cavity 1115 defined by the disk side wall 1124 extends in the height direction of the indoor unit 10, and an included angle is formed between the side wall of the installation cavity 1115 and the vertical direction; the cavity bottom wall of the installation cavity 1115 extends in the width direction of the indoor unit 10, an included angle is formed between the cavity bottom wall of the installation cavity 1115 and the horizontal direction, and the included angle between the side wall of the installation cavity 1115 and the vertical direction is smaller than the included angle between the cavity bottom wall of the installation cavity 1115 and the horizontal direction.

It should be noted that, in combination with the above, the wind wheel 2 of the present application adopts a cross flow wind wheel, so that the indoor unit 10 has the characteristics of large air output and low noise. In addition, the wind wheel 2 is directly installed in the wind wheel cavity 1132, the dimension (i.e. the X-X direction) of the wind wheel 2 in the axial direction is matched with the dimension of the wind wheel cavity 1132 in the X-X direction, so that the surplus space of the wind wheel cavity 1132 in the X-X direction is less, the electric control box 4 is difficult to install, and in order to realize effective heat dissipation of the electric control box 4, if the dimension of the wind wheel cavity 1132 is increased to place the electric control box 4, the whole dimension of the indoor unit 10 is increased, so that the indoor unit 10 also ingeniously utilizes the space below the diffusion cavity lower shell 1122 to form an installation cavity 1115 under the condition that the air duct 113 is arranged as the fluent structure of the wind wheel cavity 1132, the diffusion cavity 1133 and the heat exchange cavity 1134 so as to reduce wind energy loss, and accommodates and installs the electric control box 4, so that the whole machine further realizes the advantage of convenient disassembly and assembly with the emphasis on the basis of compact structure.

With continued reference to fig. 13 to 15, fig. 13 is a schematic structural diagram of a second partial structure of the indoor unit according to the embodiment of the present application, fig. 14 is a cross-sectional view at G-G in fig. 13, and fig. 15 is an enlarged schematic structural diagram of a part at H in fig. 14. When the box body 43 is detachably connected with the second housing 112, that is, the box body 43 is detachably connected with the lower diffuser 1122, in some specific embodiments, a connection mode of combining threaded connection and clamping connection can be adopted for a connection mode between the box body 43 and the lower diffuser 1122, the threaded connection mode can achieve grounding of the electronic control box 4 when a threaded fastener contacts with a grounding wire in the electronic control box 4, the threaded fastener can reliably connect the box body 43 with the lower diffuser 1122, and the clamping connection mode can achieve rapid disassembly and assembly between the box body 43 and the lower diffuser 1122.

Accordingly, referring to fig. 16 and 17, fig. 16 is a schematic perspective view of a diffuser lower casing in an indoor unit according to an embodiment of the present application, and fig. 17 is an enlarged schematic view of a part of the structure at I in fig. 16. In some embodiments, in the width direction of the electronic control box 4, one side of the box body 43 is detachably connected with the diffuser lower casing 1122 through a threaded fastener, and the other side of the box body 43 is in clamping connection with the diffuser lower casing 1122.

The width direction of the electronic control box 4 corresponds to the y1-y1 axis direction in fig. 2, 3, 4, 6, 13, and 14.

Specifically, at one side of the electric control box 4 in the width direction, a third threaded hole 4311 may be formed at the bottom of the box body 431, and a fourth threaded hole 1125 corresponding to the third threaded hole 4311 may be formed in the diffuser lower case 1122, and a screw passing through the third threaded hole 4311 and the fourth threaded hole 1125 may connect one side of the box body 431 in the width direction of the electric control box 4 with the diffuser lower case 1122.

In order to avoid that the structural strength of the diffuser lower case 1122 is affected by the arrangement of the fourth screw hole 1125, a reinforcing plate 1126 may be provided on the side of the diffuser lower case 1122 facing the case body 431, so that the structural strength of the diffuser lower case 1122 can be improved.

Further, a first locking protrusion 1127 may be disposed on the lower diffuser 1122 of the electrical control box 4 at the other side in the width direction, and a first locking hole 4312 through which the first locking protrusion 1127 passes may be formed on the side wall of the box body 431, where the first locking protrusion 1127 passes through the first locking hole 4312 and is locked with the first locking hole 4312, so as to detachably connect the box body 431 and the lower diffuser 1122 of the electrical control box 4 at the other side in the width direction.

In the present embodiment, the shape of the first catching convex 1127 is not particularly limited.

In order to improve the connection reliability between the box body 431 and the diffuser lower shell 1122, two third threaded holes 4311 distributed at intervals along the length direction of the electric control box 4 may be provided on one side of the box body 431 along the width direction of the electric control box 4, and two first clamping holes 4312 distributed at intervals along the length direction of the electric control box 4 may be provided on the other side of the box body 431 along the width direction of the electric control box 4, and at the same time, two fourth threaded holes 1125 corresponding to the third threaded holes 4311 and two first clamping protrusions 1127 corresponding to the first clamping holes 4312 may be provided on the diffuser lower shell 1122. In other embodiments, the third and fourth threaded holes 4311 and 1125 and the first locking protrusions 1127 and 4312 may be other numbers, such as three, four, etc. Here, no limitation is imposed.

The longitudinal direction of the electronic control box 4 is identical to the longitudinal direction of the indoor unit 10, i.e., the x-x axis direction in the drawing.

With continued reference to fig. 18 to 21, fig. 18 is a schematic structural view of a third partial structure of the indoor unit according to the embodiment of the present application, fig. 19 is a sectional view taken along the line J-J in fig. 18, fig. 20 is an enlarged schematic structural view of a part of the indoor unit at the point K in fig. 19, and fig. 21 is an enlarged schematic structural view of a part of the indoor unit at the point L in fig. 19. As shown in fig. 18 to 21, in other embodiments, the case body 431 and one side of the lower diffuser 1122 along the length direction of the electronic control box 4 are detachably connected by a threaded fastener, and the case body 431 and the other side of the lower diffuser 1122 along the length direction of the electronic control box 4 are snap-connected.

Specifically, because the bottom of the box body 431 is smaller in the length direction of the electric control box 4, an avoidance space 4313 is formed on two sides of the bottom of the box body 431, a fifth threaded hole 4314 is formed on the top wall of the avoidance space 4313 on one side of the box body 431 along the length direction of the electric control box 4, a sixth threaded hole 1128 can be formed on the lower diffuser 1122, and a threaded fastener, such as a screw, can sequentially pass through the fifth threaded hole 4314 and the sixth threaded hole 1128 to detachably connect one side of the box body 431 along the length direction of the electric control box 4 with the lower diffuser 1122.

In order to avoid the influence of the opening of the sixth screw hole 1128 on the structural strength of the diffuser lower case 1122, a reinforcing column 1129 may be provided on the diffuser lower case 1122, the reinforcing column 1129 may extend into the corresponding avoiding space 4313, and the sixth screw hole 1128 may be opened on the reinforcing column 1129.

Further, a second clamping hole 4315 may be formed on a side wall of the avoidance space 4313 at the other side of the box body 431 along the length direction of the electric control box 4, and correspondingly, a second clamping protrusion 1130 may be disposed on the lower diffuser 1122, and the second clamping protrusion 1130 may be clamped with the second clamping hole 4315 through the second clamping hole 4315.

Here, the shape of the second catching convex 1130 is not particularly limited.

With continued reference to fig. 22 to 25, fig. 22 is a schematic perspective view of an indoor unit according to another embodiment of the present application, fig. 23 is an enlarged schematic perspective view of a portion of fig. 22 at a position M, fig. 24 is a schematic perspective view of an indoor unit according to another embodiment of the present application, and fig. 25 is an enlarged schematic perspective view of a portion of fig. 24 at a position N. As shown in fig. 22 to 25, in order to drain the water in the water receiving tray 1121, the indoor unit 10 provided in this embodiment may further include a drain pipe 5, and the drain pipe 5 is connected to the water receiving tray 1121. In this way, the condensed water is prevented to some extent from being accumulated in the water receiving tray 1121, which may cause the indoor unit 10 to leak out of the condensed water and leak out of the room.

In order to improve the compactness of the indoor unit 10 provided in this embodiment, in some alternative embodiments, the space between the electric control box 4 and the cavity 1118 of the installation cavity 1115 may be penetrated by the water supply and drainage pipe 5 and the refrigerant pipe 6. In this way, the electronic control box 4, the drain pipe 5 and the refrigerant pipe 6 can be accommodated in the installation cavity 1115, so that the indoor unit 10 provided in this embodiment is more compact in structural layout.

Specifically, the refrigerant pipe 6 includes an air pipe 61 and a liquid pipe 62, one end of the air pipe 61 is connected to the heat exchanger 3, the other end is connected to the outdoor unit, one end of the liquid pipe 62 is connected to the heat exchanger 3, and the other end is connected to the outdoor unit, so that in the refrigeration process, the refrigerant is transferred to the heat exchanger 3 through the liquid pipe 62 in a liquid state, and the heat exchanger 3 converts the refrigerant from the liquid state into a gaseous state, and then is transferred to the outdoor unit through the air pipe 61, and in the process, the refrigerant absorbs heat and takes away the heat to realize refrigeration; in the heating process, the refrigerant is transmitted to the heat exchanger 3 through the air pipe 61 in a gaseous form, so that the heat exchanger 3 converts the refrigerant from the gaseous form into a liquid form, and then is transmitted to the outdoor unit through the liquid pipe 62, and in the process, the refrigerant releases heat to realize heating.

In the related art, when the installation position of the outdoor unit is located in the opposite direction of the joint position of the drain pipe and the refrigerant pipe, the drain pipe and the refrigerant pipe need to be connected with the outdoor unit only by one turn on the body of the indoor unit, so that the pipe is complicated to walk, the length of the pipe can be increased, and the cost is increased. To overcome this disadvantage, in some alternative embodiments, each side plate 1114 has a tube cutout 1116 in communication with the mounting cavity 1115, and the air tube 61, liquid tube 62, and drain tube 5 can extend out of the mounting cavity 1115 through the tube cutout 1116 in either side plate 1114. In this way, the drain pipe 5, the air pipe 61 and the liquid pipe 62 can extend out of the installation cavity 1115 from the pipe notch 1116 on the side plate 1114 near the outdoor unit according to the installation position of the outdoor unit, so that the pipe can be prevented from being wound on the outer side of the indoor unit 10, and the pipe running of the indoor unit 10 is simpler.

In order to avoid the damage of the air pipe 61, the liquid pipe 62 or the drain pipe 5 when penetrating the outlet notch 1116, the mouth wall of the outlet notch 1116 is smooth, so that no sharp point exists on the mouth wall of the outlet notch 1116, and the air pipe 61, the liquid pipe 62 or the drain pipe 5 cannot be scratched to cause leakage of refrigerant or condensed water due to the fact that the sharp point is touched when touching the mouth wall of the outlet notch 1116, so that the service lives of the drain pipe 5 and the refrigerant pipe 6 are longer.

If the lower portion of the outlet notch 1116 is completely opened, the drain pipe 5 and/or the refrigerant pipe 6 may fall after extending out of the mounting cavity 1115, which may damage the drain pipe 5 and/or the refrigerant pipe 6, so that a supporting structure connected to the side plate 1114 may be disposed below the outlet notch 1116 to support the drain pipe 5 and/or the refrigerant pipe 6.

Specifically, referring to fig. 25, the support structure may be a support member 1117 connected to the side plate 1114, the support member 1117 extends along the width direction of the outlet opening 1116, in this embodiment, the extending direction of the support member 1117 coincides with the width direction of the indoor unit 10, and the support member 1117 may be a sheet metal member connected to the side plate 1114 and located below the outlet opening 1116, for example, a support plate formed by bending. Here, the specific shape of the support 1117 is not limited.

In some embodiments, in order to avoid an excessive temperature difference between the medium in the refrigerant pipe 6 and the air outside the refrigerant pipe 6, the heat insulation sleeve 7 may be wrapped on the outer side of the refrigerant pipe 6, so that condensation on the inner walls of the air pipe 61 and the liquid pipe 62 can be avoided to a certain extent.

It should be noted that there may be two heat-insulating sleeves 7, and the two heat-insulating sleeves 7 are respectively wrapped on the outer sides of the air pipe 61 and the liquid pipe 62; the heat preservation sleeve 7 can also be one, and the air pipe 61 and the liquid pipe 62 are jointly covered by one heat preservation sleeve 7. In the specific embodiment of the present embodiment, the heat insulating jacket 7 is one in order to reduce the manufacturing cost of the indoor unit 10, that is, the latter case. Here, the number of the heat insulating jackets 7 in the present embodiment is not limited.

The heat insulation sleeve 7 can be made of glass wool, rubber plastic sponge or polyurethane, so that the heat insulation sleeve 7 has the characteristics of excellent heat insulation performance, corrosion resistance, moisture resistance and the like, has good processing performance, and can be processed into various shapes and thicknesses to adapt to refrigerant pipes 6 with different shapes and sizes.

While the projected area of the insulating sleeve 7 on the side plate 1114 is positioned within the outlet aperture 1116 in order to allow the insulating sleeve 7 to maintain a durable insulating effect. Like this, can avoid the exit tube breach 1116 to produce the extrusion to heat preservation cover 7 to avoid the outer wall of heat preservation cover 7 to take place wearing and tearing to a certain extent, then can make heat preservation cover 7 keep lasting heat preservation effect.

With reference to fig. 26, fig. 26 is a schematic perspective view of a water pan in an indoor unit according to an embodiment of the present application. As shown in fig. 26, in order to facilitate the water in the water receiving tray 1121 to be discharged through the water discharge pipe 5, a water discharge groove 1140 is provided on the water receiving tray 1121, specifically, a water discharge groove 1140 is provided on the tray bottom wall 1123, the water discharge groove 1140 extends in the longitudinal direction of the indoor unit 10, and a water discharge port 1141 communicating with the water discharge pipe 5 is formed on one side of the water discharge groove 1140 adjacent to the water discharge pipe 5; the depth of the drain groove 1140 is gradually increased in a direction approaching the drain port 1141. In this way, since the height at the water discharge port 1141 is lower than the height at the water inlet of the water discharge groove 1140, water located in the water discharge groove 1140 is allowed to flow along the water discharge groove 1140 toward the water discharge port 1141, so that water in the water receiving tray 1121 can be rapidly discharged through the water discharge pipe 5.

While, in order to promote the smoothness of the flow of water in the water discharge groove 1140, in some embodiments, the bottom wall of the water discharge groove 1140 is an inclined wall. In this way, the flow resistance of the water flowing in the water discharge groove 1140 is made small, so that the water in the water receiving tray 1121 can be rapidly discharged from the water discharge groove 1140.

In order to avoid the damage of the wind wheel 2 to the maintenance personnel or the user, a protection grille 12 may be provided, specifically, a part of the protection grille 12 is located on one side of the wind wheel 2 near the air return port 1131, another part of the protection grille 12 is located between the lower part of the wind wheel 2 and the electric control box 4, the protection grille 12 is detachably connected with the housing body 11, and the protection grille 12 and the wind wheel cavity upper shell 1111 enclose to form a wind wheel cavity 1132. In this way, the wind wheel 2 can be surrounded, so that the damage of the wind wheel 2 to maintenance personnel or users can be avoided to a certain extent.

The protective grille 12 is connected between the first housing 111 and the second housing 112.

Because the electronic control box 4 needs to be disassembled and assembled through the cavity 1118 of the mounting cavity 1115, the protection grille 12 located at the side of the electronic control box 4 may interfere with the disassembly and assembly of the electronic control box 4, so that the relative positions of the protection grille 12 and the electronic control box 4 can be limited to avoid the interference of the protection grille 12 on the disassembly and assembly of the electronic control box 4 to a certain extent, for example, the projections of the protection grille 12 and the electronic control box 4 on the plane where the cavity 1118 of the mounting cavity 1115 is located are not overlapped. Thus, the interference of the protective grille 12 to the disassembly and assembly of the electric control box 4 can be avoided, and the electric control box 4 can be disassembled and assembled conveniently.

In order to facilitate the disassembly and assembly of the protective grille 12, the protective grille 12 is detachably connected between the first housing 1 and the second housing 1, and in particular, the protective grille 12 is detachably connected between the wind turbine chamber upper casing 1111 and the diffuser chamber lower casing 1122.

In some specific embodiments, the wind turbine cavity upper shell 1111 and the diffuser cavity lower shell 1122 are both clamped with the protection grille 12, for example, buckles are disposed on two sides of the protection grille 12, slots are disposed on the wind turbine cavity upper shell 1111 and the diffuser cavity lower shell 1122, and the detachable connection between the protection grille 12 and the wind turbine cavity upper shell 1111 and the detachable connection between the protection grille 12 and the diffuser cavity lower shell 1122 are realized through the cooperation of the buckles and the slots. The specific form of the snap and the snap groove is not limited, and the purpose of this embodiment may be achieved as long as the engagement between the protection grille 12 and the wind turbine chamber upper case 1111 and the engagement between the protection grille 12 and the diffuser chamber lower case 1122 can be achieved.

Referring to fig. 27 and 28, fig. 27 is a schematic structural view of a fourth partial structure of an indoor unit according to an embodiment of the present application, and fig. 28 is a schematic structural view of fig. 27 in another embodiment. In some embodiments, in order to make the protection grille 12 and the projection of the electronic control box 4 on the plane of the cavity opening 1118 of the mounting cavity 1115 not overlap each other, the protection grille 12 may include a plurality of grille parts 121 connected in sequence, and the plurality of grille parts 121 are disposed at an included angle between each other.

As shown in fig. 27, in some specific embodiments, the grille part 121 includes a first grille part 1211 and a second grille part 1212, the first grille part 1211 is detachably connected to the diffuser cavity lower case 1122, and the first grille part 1211 is located between the lower part of the wind wheel 2 and the electronic control box 4; the second grid portion 1212 is detachably connected to the wind turbine cavity upper casing 1111, and the second grid portion 1212 is located at a side of the wind turbine 2 near the return air inlet 1131.

Wherein the first grill portion 1211 is perpendicular to the plane of the cavity 1118 of the mounting cavity 1115 and the second grill portion 1212 is parallel to the plane of the cavity 1118 of the mounting cavity 1115. In this way, the protective grille 12 is easy to manufacture.

As shown in fig. 28, in other specific embodiments, the grill portion 121 includes a first grill portion 1211, a second grill portion 1212, and a third grill portion 1213, which are connected in sequence; the first grille part 1211 is detachably connected with the diffuser lower shell 1122, and the first grille part 1211 is positioned between the lower part of the wind wheel 2 and the electric control box 4; the third grille part 1213 is detachably connected with the wind wheel cavity upper shell 1111, and the third grille part 1213 is positioned on one side of the wind wheel 2 close to the return air inlet 1131; the angle between the first and second grating portions 1211, 1212 and the angle between the third and second grating portions 1213, 1212 are obtuse angles.

Wherein the first grill portion 1211 is perpendicular to the plane of the cavity 1118 of the mounting cavity 1115 and the third grill portion 1213 is parallel to the plane of the cavity 1118 of the mounting cavity 1115. Therefore, the air inlet area of the mounting cavity 1115 is larger, and the electric control box 4 can be radiated conveniently.

In other embodiments, to avoid a higher sharpness of the protective grille 12, the protective grille 12 may be arranged in an arc shape, and the distance between the protective grille 12 and the electronic control box 4 increases gradually in a direction toward the cavity opening 1118 of the mounting cavity 1115. Like this, then can guarantee that installation cavity 1115's air inlet department is great like the area of wind, and can protect grid 12 to produce the interference to the dismouting of automatically controlled box 4, not only be favorable to dispelling the heat to automatically controlled box 4, be convenient for carry out the dismouting to automatically controlled box 4 moreover.

With continued reference to fig. 29, fig. 29 is a schematic structural diagram of a fifth partial structure of an indoor unit according to an embodiment of the present application. The water pump 9 is used for pumping out condensed water in the water receiving disc 1121 through the drain pipe 5; in this embodiment, the motor 8 and the water pump 9 are located on the same side of the electronic control box 4 in the length direction of the electronic control box 4. In this way, the compactness of the indoor unit 10 provided in this embodiment can be further improved, and in addition, the wiring of the electric control box 4 is also facilitated, so that the connecting wire 45 of the electric control box 4, the drain pipe 5 and the refrigerant pipe 6 can extend out of the installation cavity 1115 through the same outlet notch 1116.

The present embodiment also provides a heating and ventilation apparatus including an outdoor unit and the indoor unit 10 of the above embodiment. The structure of the indoor unit 10 is described in detail in the above embodiments, and will not be described here again.

The outdoor unit is not described in detail in this embodiment.

Claims (30)

1. The indoor unit is characterized by comprising a shell, a wind wheel, a heat exchanger and an electric control box;

An air duct is formed in the shell, the air duct comprises a wind wheel cavity, a diffusion cavity and a heat exchange cavity which are sequentially communicated, the wind wheel is arranged in the wind wheel cavity, and the heat exchanger is arranged in the heat exchange cavity;

the electric control box is arranged on the bottom surface or the side surface of the shell, so that the electric control box is exposed at the bottom or the side part of the indoor unit.

2. The indoor unit of claim 1, wherein the electronic control box is installed at a middle portion of the bottom surface of the casing.

3. The indoor unit of claim 1, wherein the electrical control box is located between the wind wheel cavity and the heat exchange cavity.

4. An indoor unit according to claim 3, wherein the duct has a return air inlet in communication with the wind wheel cavity, the return air inlet being formed in a bottom or side face of the housing;

An installation cavity is formed on the bottom surface of the shell between the wind wheel cavity and the heat exchange cavity, and the electric control box is installed in the installation cavity.

5. The indoor unit of claim 4, wherein the return air inlet is formed at a bottom surface side of the casing;

The installation cavity is formed in the bottom surface of the shell, and the installation cavity is arranged adjacent to the wind wheel cavity.

6. The indoor unit of claim 5, wherein the indoor unit in an installed state has a length direction, a width direction, and a height direction;

The size of the installation cavity in the width direction of the indoor unit gradually decreases in the direction away from the air return opening.

7. The indoor unit of claim 5, wherein the housing comprises a water pan and a diffuser lower shell;

The water receiving disc is used for limiting the cavity bottom wall of the heat exchange cavity and comprises a disc bottom wall and a disc side wall, and the disc side wall is connected between the diffusion cavity lower shell and the disc bottom wall;

The disc side wall defines part of the cavity side wall of the installation cavity, and the two opposite sides of the lower diffusion cavity shell form the cavity bottom wall of the diffusion cavity and the cavity bottom wall of the installation cavity;

Wherein an included angle of greater than or equal to 90 degrees is formed between a cavity bottom wall of the mounting cavity and a cavity side wall of the mounting cavity defined by the disk side wall.

8. The indoor unit of claim 7, wherein a chamber sidewall of the installation chamber defined by the disc sidewall extends in a height direction of the indoor unit, and an included angle is formed between the sidewall of the installation chamber and a vertical direction;

The cavity bottom wall of the installation cavity extends in the width direction of the indoor unit, and an included angle is formed between the cavity bottom wall of the installation cavity and the horizontal direction.

9. The indoor unit of claim 8, wherein an angle between a sidewall of the installation cavity and a vertical direction is smaller than an angle between a cavity bottom wall of the installation cavity and a horizontal direction.

10. The indoor unit of claim 5, further comprising a drain pipe and a refrigerant pipe connected to the heat exchanger, the housing including a water pan defining a bottom wall of the heat exchange chamber, the drain pipe being connected to the water pan;

the space between the electric control box and the cavity opening of the installation cavity can be used for the drain pipe and the refrigerant pipe to penetrate.

11. The indoor unit of claim 10, wherein the housing further comprises two oppositely disposed side plates;

Each side plate is provided with an outlet pipe notch communicated with the installation cavity, and the refrigerant pipe and the drain pipe can extend out of the installation cavity through any outlet pipe notch on the side plate.

12. The indoor unit of claim 11, wherein the mouth wall of the outlet pipe gap is rounded.

13. The indoor unit of claim 11, wherein a support structure is disposed below the outlet pipe gap and is connected to the side plate;

Wherein the support structure is configured to support the drain pipe and/or the coolant pipe arrangement.

14. The indoor unit of claim 10, wherein a drain groove is formed in the water receiving tray, and a drain opening communicating with the drain pipe is formed in a side of the drain groove close to the drain pipe;

The depth of the drain groove gradually increases in a direction approaching the drain opening.

15. The indoor unit of claim 14, wherein the bottom wall of the drainage channel is an inclined wall.

16. The indoor unit of claim 5, wherein the housing includes a housing body and a protective grill detachably connected to the housing body, and the installation cavity is formed on a bottom surface of the housing body;

A part of the protective grille structure is positioned at one side of the wind wheel, which is close to the air return opening, and the other part of the protective grille structure is positioned between the lower part of the wind wheel and the electric control box and is detachably connected with the shell body;

The protection grating and the shell body are enclosed to form the wind wheel cavity.

17. The indoor unit of claim 16, wherein the protection grille and the electric control box are projected on a plane of the mounting cavity where the cavity opening is located, without overlapping each other.

18. The indoor unit of claim 16, wherein the housing body includes a first housing and a second housing connected, the first housing and the second housing cooperatively defining the air duct;

the protective grille is detachably connected between the first shell and the second shell.

19. The indoor unit of claim 18, wherein the protective grille includes a plurality of grille parts connected in sequence, and the plurality of grille parts are disposed at an included angle between each other.

20. The indoor unit of claim 19, wherein the louver sections include a first louver section and a second louver section;

The first grid part is detachably connected with the second shell, and is positioned between the lower part of the wind wheel and the electric control box; the second grid part is detachably connected with the first shell, and is positioned at one side of the wind wheel, which is close to the air return opening;

Wherein the first grid part is vertical to a plane where an cavity opening of the mounting cavity is positioned; and/or the number of the groups of groups,

The second grid part is parallel to the plane of the cavity opening of the mounting cavity.

21. The indoor unit of claim 20, wherein the louver sections include a first louver section, a second louver section, and a third louver section that are sequentially connected; the first grid part is detachably connected with the second shell, and is positioned between the lower part of the wind wheel and the electric control box; the third grid part is detachably connected with the first shell, and is positioned at one side of the wind wheel close to the air return opening;

The included angle between the first grating part and the second grating part and the included angle between the third grating part and the second grating part are obtuse angles;

Wherein the first grid part is vertical to a plane where an cavity opening of the mounting cavity is positioned; and/or the number of the groups of groups,

The third grid part is parallel to the plane of the cavity opening of the mounting cavity.

22. The indoor unit of claim 16, wherein the protection grille is disposed in an arc shape, and a distance between the protection grille and the electronic control box gradually increases in a direction toward an aperture of the installation cavity.

23. The indoor unit of claim 1, wherein an air outlet communicating with the heat exchange chamber is formed at one end of the air duct;

The dimension of the heat exchange cavity in the height direction is gradually reduced in the direction close to the air outlet.

24. The indoor unit of claim 23, wherein the inner wall of the heat exchange chamber transitions smoothly in a direction proximate the air outlet.

25. The indoor unit of claim 1, further comprising an electric auxiliary thermal module, wherein an electric heating tube of the electric auxiliary thermal module is electrically connected with the electric control box;

the electric auxiliary thermal module is positioned at one side, close to the heat exchange cavity, of the diffusion cavity.

26. The indoor unit of claim 1, further comprising a motor and a water pump, wherein an output shaft of the motor is connected to the wind wheel, and wherein the water pump is connected to the housing;

The motor and the water pump are positioned on the same side of the electric control box along the length direction of the electric control box.

27. The indoor unit of any one of claims 1 to 26, wherein the electrical control box is detachably connected to the casing by a clamping structure and/or a screw structure.

28. The indoor unit of claim 27, wherein the electric control box is detachably connected to one side of the casing along the length direction of the electric control box through the fastening structure, and the electric control box is detachably connected to the other side of the casing along the length direction of the electric control box through the screw structure; or alternatively, the first and second heat exchangers may be,

The electric control box is detachably connected with one side of the shell along the width direction of the electric control box through the clamping structure, and the electric control box is detachably connected with the other side of the shell along the width direction of the electric control box through the screw structure.

29. The indoor unit of any one of claims 1 to 26, wherein the electronic control box comprises a box body, a box cover, and an electronic control board assembly;

The box body is detachably connected with the shell, the box cover is detachably connected with the box body, and the box cover and the box body define a containing cavity for containing the electric control board assembly.

30. A heating and ventilation apparatus comprising an indoor unit according to any one of claims 1 to 29.