Indoor unit and air handling unit

Abstract

The present application provides an indoor unit and an air handling unit, wherein the indoor unit (100) comprises a housing assembly (110), a heat exchanger (120) and a sensor (130). The housing assembly (110) comprises a housing main body (111), a first plate (112) and a second plate (113), wherein the housing main body (111) is provided with a first opening (1111); the first plate (112) and the second plate (113) are connected to the housing main body (111), and the first plate (112) and the second plate (113) jointly cover the first opening (1111); the heat exchanger (120) is arranged in the housing assembly (110), and the heat exchanger (120) comprises a heat exchange pipe (121) for transporting a heat exchange medium, an external connector (122) being provided on the side of the heat exchange pipe (121) facing the first opening (1111), and the external connector (122) running through the first plate (112); and the sensor (130) is configured to measure the concentration of the heat exchange medium around itself, and the sensor (130) is disposed in the housing assembly (110) and is connected to the first plate (112) and / or the second plate (113).

Description

Indoor unit and air handling unit

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to Chinese Patent Application No. 202411546706.8, filed October 31, 2024, and entitled “Indoor unit and air handling unit,” and Chinese Patent Application No. 202422658137.8, filed October 31, 2024, and entitled “Indoor unit and air handling unit,” the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the field of air conditioning technology, and in particular, to an indoor unit and an air handling unit. BACKGROUND

[0004] Leakage of refrigerant will affect the normal use of the air conditioner, and will also endanger health, cause safety hazards, and pollute the environment. In related technologies, a refrigerant sensor for detecting refrigerant leakage is connected to an air conditioner heat exchanger or connected to an air conditioner water pan. The setting position of the refrigerant sensor is affected by the setting position of the air conditioner heat exchanger, thereby causing difficulty in installation and maintenance of the refrigerant sensor, and poor flexibility, and it is difficult to take into account different air conditioner heat exchanger setting positions or various installation scenes of the air conditioner indoor unit. SUMMARY

[0005] The main purpose of the present application is to provide an indoor unit and an air handling unit, which can at least partially solve one of the above technical problems.

[0006] To achieve the above purpose, according to an indoor unit of the first aspect of the present application, comprising:

[0007] A housing assembly, comprising a housing main body, a first plate body, and a second plate body, the housing main body is provided with a first opening, the first plate body and the second plate body are connected to the housing main body, and the first plate body and the second plate body jointly cover the first opening;

[0008] A heat exchanger provided in the housing assembly, the heat exchanger comprises a heat exchange pipeline for transporting a heat exchange medium, one side of the heat exchange pipeline towards the first opening is provided with an external connector, and the external connector is provided through the first plate body; and

[0009] A sensor for detecting the concentration of the heat exchange medium around itself, the sensor is provided in the housing assembly and connected to the first plate body and / or the second plate body.

[0010] In some embodiments, a plane perpendicular to the axial direction of the first opening is a projection plane, the heat exchanger forms a first orthographic projection on the projection plane, the sensor forms a second orthographic projection on the projection plane, and the first orthographic projection at least partially overlaps with the second orthographic projection.

[0011] In some embodiments, the sensor is connected to the first plate body, and the sensor is located on a side of the first plate body close to the second plate body.

[0012] In some embodiments, the sensor is connected to the second plate body, and the sensor is located on a side of the second plate body close to the external joint.

[0013] In some embodiments, the sensor is connected to the first plate body and the second plate body respectively, and the sensor at least partially overlaps with the first plate body and the second plate body respectively when viewed along the axial direction of the first opening.

[0014] In some embodiments, the indoor unit further comprises a first water pan arranged in the housing assembly and located on a side of the heat exchanger along a first direction, the first direction being perpendicular to the axial direction of the first opening, the first water pan being configured to receive condensate water falling on an outer wall of the heat exchanger along the first direction; and the sensor is located on a side of the first water pan close to the external joint along the first direction.

[0015] In some embodiments, the indoor unit further comprises a second water pan arranged in the housing assembly and located on a side of the heat exchanger along a second direction, the second direction being perpendicular to the first direction and the axial direction of the first opening respectively, the second water pan being configured to receive condensate water falling on an outer wall of the heat exchanger along the second direction; the indoor unit has a first installation state and a second installation state, in the first installation state, the first water pan is located below the heat exchanger, in the second installation state, the second water pan is located below the heat exchanger; and the sensor is located on a side of the second water pan close to the external joint along the second direction.

[0016] In some embodiments, the second plate body has a first side edge arranged opposite to the external joint along the second direction, and the sensor is located on a side of the external joint close to the first side edge.

[0017] In some embodiments, the first water pan comprises a side plate close to the first opening, the sensor is located on a side of the side plate facing the external joint, and one end of the sensor abuts against a side wall of the side plate away from the first opening.

[0018] In some embodiments, the sensor comprises a sensing body and a fixing support, the fixing support connects the first plate body and / or the second plate body, the sensing body is connected to the fixing support; and a step portion is arranged on one end of the fixing support facing the side plate, the step portion has a first step surface abutting the first plate body and / or the second plate body and a second step surface abutting the side wall of the side plate away from the first opening, the second step surface is located on the side of the first step surface close to the heat exchanger.

[0019] In some embodiments, the sensor comprises a sensing body and a fixing support, the fixing support connects the first plate body and / or the second plate body, the sensing body is connected to the fixing support.

[0020] In some embodiments, the sensing body is connected to the side of the fixing support facing the heat exchanger.

[0021] In some embodiments, the sensing body comprises a detection port adapted to guide the heat exchange medium, the detection port is arranged away from the fixing support.

[0022] In some embodiments, the fixing support is connected to the first plate body and located on the side of the first plate body close to the second plate body, the sensing body comprises a wiring terminal, the wiring terminal is located on the side of the sensing body away from the second plate body.

[0023] In some embodiments, the fixing support comprises a water blocking portion, the water blocking portion is arranged on the side of the sensing body along the axis direction perpendicular to the first opening.

[0024] In some embodiments, the fixing support comprises a water blocking portion, the water blocking portion is arranged on the side of the sensing body along the axis direction perpendicular to the first opening, the water blocking portion is arranged in an inclined manner.

[0025] In some embodiments, the second plate body is detachably connected to the first plate body, the first plate body comprises a first connecting side edge connected to the second plate body, the second plate body comprises a second connecting side edge connected to the first plate body, the first connecting side edge and the second connecting side edge are arranged in a stacked manner; and the first connecting side edge is located on the side of the second connecting side edge facing the heat exchanger.

[0026] In some embodiments, the second connecting side edge is located on the side of the first connecting side edge facing the heat exchanger.

[0027] In some embodiments, the first connecting side is located on a side of the second connecting side facing the heat exchanger, the sensor is connected to the first connecting side, the indoor unit further comprises a first connecting member, the first connecting member penetrates the first connecting side and connects the sensor, and the second connecting side is provided with a recess for avoiding the first connecting member.

[0028] In some embodiments, the second connecting side is located on a side of the first connecting side facing the heat exchanger, the sensor is connected to the second connecting side, the indoor unit further comprises a second connecting member, the second connecting member penetrates the second connecting side and connects the sensor, and the first connecting side is provided with a recess for avoiding the first connecting member.

[0029] In some embodiments, the indoor unit further comprises a third connecting member, the third connecting member penetrates the second connecting side and the first connecting side and connects the sensor.

[0030] In some embodiments, a direction perpendicular to the axial direction of the first opening is a first direction, a direction perpendicular to the first direction and the axial direction is a second direction, the first plate body is located on a side of the first opening along the first direction and a side of the first opening along the second direction, a side of the first plate body along the reverse direction of the first direction is a second side, and a side of the first plate body along the reverse direction of the second direction is a third side, the second side and the third side are adjacently arranged, and the second plate body has a first side connected to the third side and a fourth side connected to the second side.

[0031] Embodiments of the second aspect of the present application also provide an air handling unit, comprising the indoor unit of any of the above embodiments, an outdoor unit, and a pipe assembly, wherein the pipe assembly communicates the indoor unit and the outdoor unit. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0033] FIG. 1 is a first side perspective view of an indoor unit provided in an embodiment of the present application;

[0034] FIG. 2 is a front view of an indoor unit provided in an embodiment of the present application; wherein part of the shell body is removed, and part of the components blocked by the first plate body is shown;

[0035] Fig. 3 is a second side perspective view of the indoor unit according to an embodiment of the present application, with a second plate removed;

[0036] Fig. 4 is a perspective view of a combination of the first plate, a sensor and a first water pan according to an embodiment of the present application;

[0037] Fig. 5 is an enlarged view of a portion of Fig. 4;

[0038] Fig. 6 is an exploded view of a combination of the first plate, the second plate, a first connector and a third connector according to an embodiment of the present application;

[0039] Fig. 7 is a top view of the indoor unit according to an embodiment of the present application;

[0040] Fig. 8 is a sectional view taken along the line B-B of Fig. 7;

[0041] Fig. 9 is an enlarged view of a portion of Fig. 8;

[0042] Fig. 10 is an exploded view of a combination of a flow guide assembly, an external connector, a first conversion pipe and a first internal connector according to an embodiment of the present application;

[0043] Fig. 11 is an exploded view of a combination of the flow guide assembly, the external connector and the first plate according to an embodiment of the present application; and

[0044] Fig. 12 is an exploded view of a combination of the first plate, the second plate, the first connector and a second connector according to another embodiment of the present application.

[0045] Explanation of reference numerals: indoor unit 100; housing assembly 110; housing main body 111; first opening 1111; first plate body 112; second side edge 1121; third side edge 1122; first connecting side edge 1123; first through hole 1124; second through hole 1125; plate main body 1126; assembly block 1127; first region 1128; second region 1129; second plate body 113; first side edge 1131; fourth side edge 1132; second connecting side edge 1133; avoiding groove 11331; first cavity 114; fourth through hole 115; fifth through hole 116; heat exchanger 120; heat exchange pipeline 121; external connector 122; first external connector 122A; second external connector 122B; sensor 130; sensor main body 131; detection port 1311; wiring terminal 1312; fixing support 132; stepped portion 1321; first stepped surface 13211; second stepped surface 13212; water blocking portion 1322; first water pan 140; side plate 141; second water pan 150; first connecting piece 160; third connecting piece 170; first conversion pipe 180; first internal connector 190; flow guide assembly 200; fixing block 210; base 211; boss 212; first sleeve 220; third through hole 230; second sleeve 240; first binding piece 250; second binding piece 260; sixth through hole 270; first flow guide cavity 300; second conversion pipe 400; overflow hole 500; second connecting piece 600; axial direction L; first direction X; second direction Y.

[0046] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0048] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0049] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0050] In the related art, the refrigerant sensor is connected to the air conditioner heat exchanger or connected to the air conditioner water pan. The setting position of the refrigerant sensor is affected by the setting position of the air conditioner heat exchanger, thereby causing difficulty in installation and maintenance of the refrigerant sensor, and poor flexibility, and it is difficult to take into account different air conditioner heat exchanger setting positions or various installation scenes of the air conditioner indoor unit. More specifically, the inventors have found that, on the one hand, the air conditioner indoor unit can be designed in a modular manner, that is, the heat exchanger can be installed or modified at any suitable position in the cavity of the air conditioner indoor unit according to the needs; on the other hand, the air conditioner indoor unit can have various installation modes, for example, the air conditioner indoor unit can be installed vertically or horizontally, and the above two installation modes can each be reversed by 180° to further divide into two installation modes. Therefore, under different installation modes of the air conditioner indoor unit, the setting of connecting the refrigerant sensor to the heat exchanger or to the water pan cannot guarantee good detection effect, and cannot guarantee the convenience of installation and maintenance.

[0051] In view of this, referring to FIGS. 1-12, an indoor unit 100 is provided in the embodiments of the first aspect of the present application, which comprises a shell assembly 110, a heat exchanger 120, a first conversion pipe 180 and a sensor 130. The indoor unit 100 can be used for any suitable type of air handling unit, and the installation mode of the indoor unit 100 can be wall-mounted, vertical, ceiling-mounted, etc. or the indoor unit 100 can select one of the various installation modes according to the needs.

[0052] Referring to FIGS. 1-3, the shell assembly 110 defines a first cavity 114, and the shell assembly 110 comprises a first plate body 112, which is provided with a first through hole 1124 and a second through hole 1125 respectively communicating with the first cavity 114.

[0053] Referring to FIGS. 1-3, the shell assembly 110 includes a shell body 111, a first plate body 112, and a second plate body 113. The shell body 111 is provided with a first opening 1111. The first plate body 112 and the second plate body 113 are both connected to the shell body 111, and the first plate body 112 and the second plate body 113 jointly cover the first opening 1111. In some embodiments, the first plate body 112 and the second plate body 113 can both serve as a panel on one side of the shell assembly 110 (which can be any suitable side). In some embodiments, the panel on one side of the shell assembly 110 can be jointly formed by the first plate body 112 and the second plate body 113. In other embodiments, only part of the panel on one side of the shell assembly 110 can be formed by the first plate body 112 and the second plate body 113. In addition, the shell body 111 can include other plate body portions of the shell assembly 110 in addition to the first plate body 112 and the second plate body 113, so that the shell body 111 and the first plate body 112 and the second plate body 113 jointly form a housing portion of the indoor unit 100. The following describes that the first plate body 112 and the second plate body 113 are both detachably connected to the shell body 111. For example, the second plate body 113 is detachably connected to the shell body 111. The connection between the second plate body 113 and the shell body 111 can be detached, and the detachment of the two does not affect the installation and fixation of other structures (including the shell body 111 and the first plate body 112). That is, the second plate body 113 can be detached separately. In some embodiments, the first plate body 112 and the second plate body 113 can also be detachably connected.

[0054] Referring to FIGS. 1-3, the heat exchanger 120 is mainly used to adjust the indoor temperature through heat exchange. The heat exchanger 120 is arranged in the shell assembly 110, that is, the shell assembly 110 itself defines a containing cavity, and the heat exchanger 120 is arranged in the containing cavity. The heat exchanger 120 includes a heat exchange pipeline 121 for transporting a heat exchange medium. The heat exchange pipeline 121 is provided with an external connector 122 on the side facing the first opening 1111. The external connector 122 is arranged through the first plate body 112 and can be connected to the first plate body 112. The heat exchange medium can be a refrigerant (or coolant), and the heat exchange medium can be flammable. In different embodiments, the heat exchange medium can be in a liquid state, a gaseous state, or a mixed state.

[0055] Referring to FIGS. 1-3, the sensor 130 is configured to detect the concentration of the heat exchange medium around the sensor 130, and the sensor 130 is arranged in the housing assembly 110 and connected to the first plate body 112 and / or the second plate body 113. It should be noted that in different embodiments, the detection of the sensor 130 described in the present application can be intermittent detection at an interval or continuous monitoring. According to the type of the heat exchange medium and the detection requirement, the sensor 130 can detect the concentration of the heat exchange medium in any suitable manner. For example, the sensor 130 can be a gas sensor 130 and can sense the gas concentration or gas composition around the sensor 130; or the sensor 130 can be a temperature sensor 130 and can sense the temperature around the sensor 130, and further determine whether there is a leaked heat exchange medium around the sensor 130 according to the sensed temperature data, and further detect the concentration of the leaked heat exchange medium; or the sensor 130 can be an ultrasonic sensor 130 and can sense the gas flow around the sensor 130 by using ultrasonic signals, and further determine whether there is a leaked heat exchange medium around the sensor 130 according to the sensed gas flow data, and further detect the concentration of the leaked heat exchange medium.

[0056] Referring to FIGS. 1-3 and FIGS. 10-11, the heat exchanger 120 is arranged in the first chamber 114, and the heat exchanger 120 includes a first external connection joint 122A, and the first external connection joint 122A extends out of the first chamber 114 through the first through hole 1124. The first conversion pipe 180 is adapted to be connected to the first external connection joint 122A at one end and adapted to be connected to a first internal connection joint 190 of the outdoor unit at the other end. It can be understood that the first external connection joint 122A extends out of the housing assembly 110 to form an external pipe of the heat exchanger 120, and the first conversion pipe 180 is used to connect the pipe of the heat exchanger 120 and the pipe of the outdoor unit.

[0057] It can be seen that in the scheme of the present application, the sensor 130 is installed by the first plate body 112 and / or the second plate body 113, and since the first plate body 112 and the second plate body 113 are detachably connected to the housing body 111, the installation or maintenance of the sensor 130 is more convenient, and is not limited by the arrangement position of the heat exchanger 120. In addition, the different arrangement positions of the heat exchanger 120 and various installation and placement modes of the indoor unit 100 will not affect the installation and maintenance of the sensor 130 and the function of the sensor 130. Therefore, the indoor unit 100 of the present application can more conveniently install or maintain the sensor 130.

[0058] Referring to FIGS. 7-11, the indoor unit 100 can further include a flow guide assembly 200 adapted to be connected to the side wall of the first plate body 112 away from the first chamber 114 and to be sleeved outside the first external joint 122A, the first conversion pipe 180 and the first internal joint 190, and the flow guide assembly 200 is adapted to cooperatively define a first flow guide cavity 300 in communication with the second through hole 1125 with the first plate body 112, the first external joint 122A, the first conversion pipe 180 and the first internal joint 190. It can be understood that the flow guide assembly 200 can be sleeved outside the first external joint 122A, the first conversion pipe 180 and the first internal joint 190 to form the first flow guide cavity 300 of the flow guide assembly 200, and based on this, the second through hole 1125 can guide the first flow guide cavity 300 formed by sleeving the flow guide assembly 200 and the first chamber 114 of the shell assembly 110, and since the sensor 130 is arranged in the shell assembly 110, the sensor 130 can detect whether a leakage phenomenon occurs in the shell assembly 110 and whether a leakage phenomenon occurs at the position sleeved by the flow guide assembly 200 outside the shell assembly 110.

[0059] Referring to FIGS. 7-11, in some embodiments, the flow guide assembly 200 includes a fixed block 210 and a first sleeve 220. The fixed block 210 is adapted to be connected to the wall surface of the first plate body 112 away from the first chamber 114, and the fixed block 210 is provided with a third through hole 230 in communication with the first through hole 1124 and the second through hole 1125, respectively. It should be noted that in some embodiments, the same part of the third through hole 230 can simultaneously communicate the first through hole 1124 and the second through hole 1125; in other embodiments, different two parts of the third through hole 230 can respectively communicate the first through hole 1124 and the second through hole 1125; in addition, in different embodiments, the first through hole 1124 and the second through hole 1125 can be spaced apart from each other or can be in communication with each other. In some embodiments, the first through hole 1124 communicates the second through hole 1125 on one side in a direction perpendicular to the hole axis of the first through hole 1124. The first external joint 122A is threaded through the third through hole 230 and is in clearance fit with the third through hole 230. One end of the first sleeve 220 is adapted to be connected to the fixed block 210, and the first sleeve 220 is adapted to be sleeved outside the first external joint 122A, the first conversion pipe 180 and the first internal joint 190 and connected to the outer peripheral wall of the first internal joint 190.

[0060] Further, based on the fixed block 210 and the first sleeve 220 defined in the above embodiments, referring to FIGS. 7-11, in some embodiments, the fixed block 210 comprises a base 211 and a boss 212 protruding from the base 211, the third through hole 230 penetrates through the base 211 and the boss 212, and the first sleeve 220 is adapted to be sleeved on the outer periphery of the boss 212. Through the above arrangement, the connection between the first sleeve 220 and the fixed block 210 is more stable, and is convenient to disassemble.

[0061] Further, based on the boss 212 and the first sleeve 220 arranged in the above embodiments, referring to FIGS. 7-11, in some embodiments, the flow guide assembly 200 further comprises a first binding member 250 and a second binding member 260, referring to FIG. 8, the first binding member 250 is adapted to be sleeved on one end of the first sleeve 220 and to tighten the connection between the first sleeve 220 and the boss 212, and the second binding member 260 is adapted to be sleeved on the other end of the first sleeve 220 and to tighten the connection between the first conversion pipe 180 and the first inner joint 190. Through the above arrangement, the first binding member 250 and the second binding member 260 can make the sealing effect of the connection between the first sleeve 220 and the boss 212 and the connection between the first conversion pipe 180 and the first inner joint 190 better. Specifically, referring to FIG. 10, the first binding member 250 and the second binding member 260 can both be a hose clamp.

[0062] In addition, referring to FIGS. 7-11, in some embodiments, the first through hole 1124 and the second through hole 1125 are in communication with each other. Through the above arrangement, the processing of the first plate body 112 is more convenient, and the processing cost is lower. According to the needs, in other embodiments, the first through hole 1124 and the second through hole 1125 can also be arranged at intervals.

[0063] Further, the first through hole 1124 and the second through hole 1125 are arranged to be in communication with each other. Referring to FIGS. 7-11, in some embodiments, the first plate body 112 includes a plate main body 1126 and an assembly block 1127, the plate main body 1126 is provided with an assembly opening, the assembly opening includes a first area 1128 and a second area 1129, the assembly block 1127 is detachably connected to the plate main body 1126 and covers the first area 1128, and the second area 1129 includes the first through hole 1124 and the second through hole 1125. Through the above arrangement, when the user needs to install or dismount the first external connector 122A, the assembly block 1127 is first separated from the plate main body 1126, the dismounting operation is completed, and then the assembly block 1127 is installed on the plate main body 1126, so that the detachable assembly block 1127 is more convenient for the dismounting operation of the first external connector 122A. In addition, the assembly block 1127 is installed on the plate main body 1126, so that the first area 1128 is shielded and the second area 1129 (the first through hole 1124 and the second through hole 1125) is exposed, so that the size and shape of the shielded first area 1128 depend on the assembly block 1127, thereby making the first through hole 1124 and the second through hole 1125 more convenient for design and adjustment through the assembly block 1127.

[0064] Further, based on the plate body 1126 and the assembly block 1127 of the above-mentioned embodiments, referring to FIGS. 7-11, in some embodiments, the second region 1129 further comprises a fourth through hole 115 and a fifth through hole 116, the fourth through hole 115 is communicated with the second through hole 1125, and the fourth through hole 115 is spaced apart from the first through hole 1124 in a direction perpendicular to the axis direction L. Based on this, in some embodiments, the heat exchanger 120 further comprises a second external connection joint 122B, the second external connection joint 122B is arranged to pass through the first chamber 114 through the fourth through hole 115; the indoor unit 100 further comprises a second conversion pipe 400, one end of the second conversion pipe 400 is adapted to be connected to the second external connection joint 122B, and the other end of the second conversion pipe 400 is adapted to be connected to a second internal connection joint of the outdoor unit; the fixing block 210 is provided with a sixth through hole 270 communicated with the fourth through hole 115 and the fifth through hole 116, respectively, the second external connection joint 122B passes through the sixth through hole 270 and is in clearance fit with the sixth through hole 270; the flow guide assembly 200 further comprises a second sleeve pipe 240, one end of the second sleeve pipe 240 is adapted to be connected to the fixing block 210, and the second sleeve pipe 240 is adapted to be sleeved on the second external connection joint 122B, the second conversion pipe 400 and the second internal connection joint and connected to the outer circumferential wall of the second internal connection joint, so as to jointly define a second flow guide cavity communicated with the fifth through hole 116 with the second external connection joint 122B, the second conversion pipe 400 and the second internal connection joint. It can be understood that the second external connection joint 122B and the second sleeve pipe 240 arranged as described above are similar to the arrangement of the first external connection joint 122A and the first sleeve pipe 220 of the foregoing embodiments (and the arrangement of the second external connection joint 122B and the second sleeve pipe 240 can refer to the related arrangement of the first external connection joint 122A and the first sleeve pipe 220), the difference is that the second external connection joint 122B can serve as another joint extending outward relative to the shell assembly 110 (which can have the same function as the first external connection joint 122A, or can be different, for example, the first external connection joint 122A and the second external connection joint 122B can both be input joints for providing refrigerant, or the first external connection joint 122A can be an input joint for providing refrigerant, and the second external connection joint 122B can be an output joint for discharging refrigerant).

[0065] In addition, in some embodiments, the first sleeve 220 is made of a material with a modulus of elasticity smaller than that of the first conversion pipe 180. This arrangement makes the first sleeve 220 more deformable than the first conversion pipe 180, so that when the first conversion pipe 180 is bent (or when the first conversion pipe 180 needs to be replaced with a different size), the first sleeve 220 can be deformed to adapt to the structure of the first conversion pipe 180, so that the first sleeve 220 can be adapted to be sleeved outside the first conversion pipe 180. Therefore, through the above arrangement, the arrangement of the first sleeve 220 is more flexible, and the installation is more convenient. Specifically, the material of the first sleeve 220 can be PE cotton or any suitable soft material. On the other hand, in some embodiments, the base 211 is made of a material with a modulus of elasticity smaller than that of the first external connector 122A. This arrangement makes the base 211 more deformable than the first external connector 122A, so that when the structure of the first external connector 122A is more complex (or when the first external connector 122A needs to be replaced with a different size), the base 211 can be deformed to adapt to the structure of the first external connector 122A, so that the base 211 can be adapted to be sleeved outside the first external connector 122A. Therefore, through the above arrangement, the connection and installation at the base 211 are more convenient, and the vibration phenomenon caused by the rigid connection of the base 211 and the first external connector 122A can be reduced. Specifically, the material of the base 211 can be rubber or any suitable soft material.

[0066] In addition, in some embodiments, the first conversion pipe 180 is adapted to be threadedly connected with the first external connector 122A. Through the above arrangement, the connection between the first conversion pipe 180 and the first external connector 122A is more convenient to disassemble and seal. On the other hand, in some embodiments, the first conversion pipe 180 is adapted to be welded with the first internal connector 190. Through the above arrangement, the connection between the first conversion pipe 180 and the first internal connector 190 is more stable and convenient to seal.

[0067] Referring to the previously mentioned housing assembly 110 (see Figures 1-3), the sensor 130 is housed within the housing assembly 110 and connected to the first plate 112 and / or the second plate 113. The connection between the sensor 130 and the first plate 112 and / or the second plate 113 can be fixed or detachable. Furthermore, the connection of the sensor 130 to the first plate 112 and / or the second plate 113 indicates that the sensor 130 can be connected to either the first plate 112 or the second plate 113, or simultaneously to both. This configuration allows the sensor 130 to be mounted using the first plate 112 and / or the second plate 113. Since both the first plate 112 and the second plate 113 are detachably connected to the housing body 111, the installation and maintenance of the sensor 130 are more convenient and not limited by the location of the heat exchanger 120. For example, taking the case where sensor 130 is only connected to the first plate 112, when it is necessary to install or repair sensor 130, one approach is to remove the second plate 113 separately, while the first plate 112 and sensor 130 can be installed in their original positions. This allows the operator to reach into the housing assembly 110 with their hands or tools to install or repair sensor 130, and provides a large operating space. Alternatively, another approach is to remove the first plate 112 separately, and sensor 130 is also removed at the same time. The second plate 113 can then be installed in its original position, which facilitates further processing of sensor 130 by the operator.

[0068] In conjunction with the previous heat exchanger 120, the different settings of the heat exchanger 120 and the various installation and placement methods of the air conditioner indoor unit 100 will not affect the installation, maintenance and function of the sensor 130. More specifically, since the sensor 130 is connected to the first plate 112 and / or the second plate 113, it can avoid the sensor 130's detection accuracy from deteriorating due to other structures blocking the heat exchange medium caused by changes in the setting of the heat exchanger 120 or the installation method of the air conditioner indoor unit 100, or the sensor 130 hindering the installation of other structures.

[0069] Furthermore, while the sensor 130 can detect the concentration of the heat exchange medium around the heat exchanger 120, since the external connector 122 is located on the side close to the first opening 1111, the sensor 130 can also detect the concentration of the heat exchange medium around the external connector 122. This makes the detection function of the sensor 130 more comprehensive and helps to reduce costs.

[0070] To ensure that the sensor 130 has a better detection effect on the concentration of the heat exchange medium around the heat exchanger 120, referring to Figures 2 and 3, in some embodiments, the plane perpendicular to the axial direction L of the first opening 1111 is the projection plane. The heat exchanger 120 forms a first orthographic projection on the projection plane, and the sensor 130 forms a second orthographic projection on the projection plane. The first and second orthographic projections at least partially overlap. In other words, when viewed along the axial direction L of the first opening 1111, the heat exchanger 120 and the sensor 130 can at least partially overlap. It is understood that the side of the sensor 130 facing the heat exchanger 120 along the axial direction L of the first opening 1111 can be used for detection, so that the first and second orthographic projections at least partially overlap allows the sensor 130 to be closer to the heat exchanger 120, and the detection effect is better.

[0071] Regarding the specific connection method of sensor 130, in the first type of connection method, sensor 130 is connected to the first plate 112, and sensor 130 is located on the side of the first plate 112 near the second plate 113. The aforementioned side of the first plate 112 near the second plate 113 refers to the side of the first plate 112 and the second plate 113 that are adjacent to each other. When there are multiple adjacent sides, sensor 130 can be installed on any one of them, or on the side near the heat exchanger 120 and the external connector 122. It is understood that the sensor 130 can be connected to the first plate 112 without being connected to the second plate 113. Based on this, in some embodiments, since the external connector 122 passes through and is connected to the first plate 112, the first plate 112 is not easy to disassemble in some embodiments. Therefore, the sensor 130 can be set on the side of the first plate 112 near the second plate 113 so that after the second plate 113 is removed, the sensor 130 is closer to the first opening 1111 exposed by the removal of the second plate 113. Thus, the user can more conveniently install and repair the sensor 130 through the exposed first opening 1111.

[0072] In the second connection method, sensor 130 is connected to the second plate 113, and sensor 130 is located on the side of the second plate 113 near the external connector 122. It is understood that sensor 130 can be connected to the second plate 113 without connecting to the first plate 112. Based on this, in some embodiments, since the external connector 122 passes through and connects to the first plate 112, the first plate 112 is not easily disassembled. Therefore, sensor 130 can be placed on the second plate 113, so that sensor 130 can be removed together with the second plate 113, thereby facilitating the installation and maintenance of sensor 130. Furthermore, the location of sensor 130 on the side of the second plate 113 near the external connector 122 also gives sensor 130 a better detection effect on the concentration of the heat exchange medium around the external connector 122.

[0073] Referring to Figures 2 and 6, in the third type of connection, sensor 130 is connected to both the first plate 112 and the second plate 113. Viewed along the axial direction L of the first opening 1111, sensor 130 at least partially overlaps with both the first plate 112 and the second plate 113. It is understood that connecting sensor 130 to both the first plate 112 and the second plate 113 simultaneously can improve the connection stability of sensor 130.

[0074] It should be noted that, among the three connection methods described above, the connection between the sensor 130 and the first plate 112 and / or the second plate 113 can be a direct connection (e.g., connecting the first plate 112 and / or the second plate 113 through an opening on the sensor 130 or other structures), or an indirect connection (e.g., connecting the sensor 130 to the fixed bracket 132, and connecting the fixed bracket 132 to the first plate 112 and / or the second plate 113). The limitations of the sensor 130 being located on the side or at the junction are determined by projection. Taking the limitation of the sensor 130 being located on the side of the first plate 112 near the second plate 113 as an example, it is defined as the projection of the sensor 130 on the projection plane and the projection of the side of the first plate 112 near the second plate 113 on the projection plane having an overlapping portion along the axial direction L of the first opening 1111.

[0075] Referring to Figures 3-5, in some embodiments, the indoor unit 100 further includes a first drip tray 140, which can be used to collect and drain condensate. The first drip tray 140 can have any suitable structural shape as needed, and can be connected to the heat exchanger 120 or the housing body 111. Thus, in some embodiments, the first drip tray 140 is disposed within the housing assembly 110 and located on one side of the heat exchanger 120 along a first direction X, where the first direction X is perpendicular to the axial direction L of the first opening 1111. The first drip tray 140 is used to collect condensate falling along the first direction X from the outer wall of the heat exchanger 120. Along the first direction X, the sensor 130 can be located on the side of the first drip tray 140 near the external connector 122. This arrangement allows the sensor 130 to have better detection performance for the concentration of the heat exchange medium around the external connector 122 and around the first drip tray 140.

[0076] To achieve a more comprehensive water collection function, referring to Figures 3-5, in some embodiments, the indoor unit 100 further includes a second water collection tray 150. The second water collection tray 150 is disposed within the housing assembly 110 and located on one side of the heat exchanger 120 along the second direction Y. The second direction Y is perpendicular to both the first direction X and the axial direction L of the first opening 1111. The second water collection tray 150 is used to collect condensate falling along the second direction Y from the outer wall of the heat exchanger 120. It can be understood that the second water collection tray 150 has the same function as the first water collection tray 140, both serving to collect condensate. The difference lies in their different positions, allowing them to collect condensate falling in different directions. Therefore, more specifically, in some embodiments, the indoor unit 100 has a first installation state and a second installation state. In the first installation state, the first water collection tray 140 is located below the heat exchanger 120; in the second installation state, the second water collection tray 150 is located below the heat exchanger 120. In actual use and installation scenarios, the indoor unit 100 can have multiple orientation angles (or multiple installation methods). Through the above-described settings, at least one of the first drip tray 140 and the second drip tray 150 can effectively collect condensate while the indoor unit 100 has various orientation angles. For example, in some embodiments, the first direction X can be the direction of gravity, and the second direction Y can be a horizontal direction perpendicular to the direction of gravity. Therefore, the indoor unit 100 can effectively collect condensate whether it is installed vertically or horizontally.

[0077] Furthermore, based on the above embodiments regarding the arrangement of the first water receiving tray 140 and the second water receiving tray 150, in order to enable the sensor 130 to also have a better detection effect on the concentration of the heat exchange medium around the second water receiving tray 150, in some embodiments, along the second direction Y, the sensor 130 is located on the side of the external connector 122 near the second water receiving tray 150. Alternatively, referring to Figures 4-5, in other embodiments, the second plate 113 has a first side 1131 arranged opposite to the external connector 122 along the second direction Y, and the sensor 130 is located on the side of the external connector 122 near the first side 1131 (along the axial direction L of the first opening 1111, it may or may not overlap with the first side 1131).

[0078] Furthermore, referring to Figures 1-3, in some embodiments, the first drip tray 140 and / or the second drip tray 150 may be provided with overflow holes 500. The overflow holes 500 can pass through the first plate 112 to connect the interior of the housing assembly 110 with the exterior of the housing assembly 110 (specifically, it can be a pipe connecting the exterior of the housing assembly 110) to facilitate the drainage of condensate. There may be multiple overflow holes 500. Referring to Figures 1-3, in the illustrated embodiments, both the first drip tray 140 and the second drip tray 150 are provided with two overflow holes 500.

[0079] To make the installation of sensor 130 more stable, referring to Figures 4-5, in some embodiments, the first water receiving tray 140 includes a side plate 141 near the first opening 1111, and sensor 130 is located on the side of side plate 141 facing the external connector 122. This allows sensor 130 to be closer to the first water receiving tray 140 and the external connector 122. Furthermore, one end of sensor 130 can abut against the side wall of side plate 141 away from the first opening 1111. This arrangement allows sensor 130 to receive further positioning or support by abutting against side plate 141, in addition to connecting to the first plate 112 and / or the second plate 113.

[0080] Based on the positioning or support provided by the sidewalls, further referring to Figures 4-5, in some embodiments, the sensor 130 includes a sensing body 131 and a fixing bracket 132. The fixing bracket 132 connects the first plate 112 and / or the second plate 113, and the sensing body 131 is connected to the fixing bracket 132. Thus, the fixing bracket 132 can serve to position and install the sensing body 131, and the connection method between the fixing bracket 132 and the first plate 112 and / or the second plate 113, as well as the connection method with the sensing body 131, can be determined according to requirements; for example, a bolt connection can be used. Therefore, in some embodiments, the end of the fixing bracket 132 facing the side plate 141 is provided with a stepped portion 1321. The stepped portion 1321 has a first stepped surface 13211 that fits against the first plate 112 and / or the second plate 113, and a second stepped surface 13212 that fits against the side wall of the side plate 141 away from the first opening 1111 (the fitting described in this application can be a complete fitting or a partial fitting). The second stepped surface 13212 is located on the side of the first stepped surface 13211 that is closer to the heat exchanger 120. It is understood that the side plate 141 of the first water receiving tray 140 can be set close to the first plate 112 and / or the second plate 113. If the fixing bracket 132 needs to connect the first plate 112 and / or the second plate 113, the fixing bracket 132 can also be connected to the side plate 141 to make the installation of the fixing bracket 132 more stable. To enable the fixed bracket 132 to simultaneously engage with the first plate 112 and / or the second plate 113, as well as the side plate 141, the first stepped surface 13211 of the stepped portion 1321 adheres to the first plate 112 and / or the second plate 113. Furthermore, since the second stepped surface 13212 connects to the first stepped surface 13211 and extends away from the first opening 1111 (i.e., towards the heat exchanger 120), the second stepped surface 13212 bends and extends to the side wall facing the side plate 141 away from the first opening 1111, thus adhering to the side plate 141. This arrangement enhances the installation stability of the fixed bracket 132, making it less prone to loosening. In addition, the step portion 1321 can also have a pressing or limiting function. Specifically, the first plate 112 and / or the second plate 113 and / or the side plate 141 can be provided with a mating structure that can interlock with the step portion 1321, or a limiting structure that can abut against the step portion 1321 and limit the displacement of the step portion 1321 (which can cause the step portion 1321 to disengage under external force). This makes it easier to install and position the fixed bracket 132, and the installation is more stable.

[0081] Furthermore, based on the sensor body 131 and the fixed bracket 132 defined in the above embodiments, referring to Figures 4-5, the placement of the sensor body 131 can be configured in various ways. Firstly, in some embodiments, the sensor body 131 is connected to the side of the fixed bracket 132 facing the heat exchanger 120. This configuration improves the detection effect of the sensor body 130 on the heat exchanger 120. Secondly, in some embodiments, the sensor body 131 includes a detection port 1311 suitable for conducting the heat exchange medium, and the detection port 1311 is disposed away from the fixed bracket 132. This configuration allows the detection port 1311 to extend outward relative to the fixed bracket 132, resulting in better detection performance. Thirdly, in some embodiments, the fixed bracket 132 includes a water-blocking portion 1322, which is disposed on the side of the sensor body 131 along the axial direction L perpendicular to the first opening 1111. Specifically, the water-blocking part 1322 serves to shield the sensor body 131 from liquid. Therefore, the water-blocking part 1322 can be positioned between the sensor body 131 and a location on the heat exchanger 120 (or indoor unit 100) prone to leakage or dripping. To prevent liquid accumulation on the water-blocking part 1322, it can be plate-shaped and inclined relative to the horizontal direction, allowing liquid to slide off. Fourthly, in some embodiments, the fixing bracket 132 is connected to the first plate 112 and located on the side of the first plate 112 near the second plate 113. Since the first plate 112 and the second plate 113 are separable, the fixing bracket 132 and the sensor body 131 can be more easily installed or maintained by removing the second plate 113. Furthermore, the sensor body 131 includes a terminal 1312, which can be located on the side of the sensor body 131 opposite to the second plate 113. By moving the terminal 1312 away from the first plate 112, the wiring arrangement of the sensor body 131 and the maintenance operations (disassembly and assembly operations of the second plate 113) can be located on both sides of the sensor body 131, so that the two are less likely to interfere with each other.

[0082] Referring to Figures 2 and 6, in some embodiments, the second plate 113 is detachably connected to the first plate 112. The first plate 112 includes a first connecting side 1123 connected to the second plate 113, and the second plate 113 includes a second connecting side 1133 connected to the first plate 112. The first connecting side 1123 and the second connecting side 1133 are stacked, with the first connecting side 1123 located on the side of the second connecting side 1133 facing the heat exchanger 120, or the second connecting side 1133 located on the side of the first connecting side 1123 facing the heat exchanger 120. This arrangement allows the first plate 112 and the second plate 113 to be connected through the overlapping portion of the first connecting side 1123 and the second connecting side 1133, making the connection between the two more reliable.

[0083] Furthermore, based on the above embodiments, referring to Figures 2 and 6, in some embodiments, the sensor 130 is connected to the first connecting side 1123, and the indoor unit 100 further includes a first connector 160, which passes through the first connecting side 1123 and connects to the sensor 130. The second connecting side 1133 is provided with a clearance groove 11331 for avoiding the first connector 160. It is understood that the first connector 160 can connect the first plate 112 and the sensor 130 by passing through the first connecting side 1123, and the clearance groove 11331 keeps the first connector 160 and the second plate 113 apart, meaning that the assembly and disassembly of the second plate 113 does not affect the connection between the first plate 112 and the sensor 130. In addition, in some embodiments, the indoor unit 100 further includes a third connector 170, which passes through the second connecting side 1133 and the first connecting side 1123 and connects to the sensor 130. It is understandable that the third connector 170 can pass through the first connecting side 1123 and the second connecting side 1133 to connect the first plate 112 and the sensor 130. Considering the above-described configuration of the first connector 160 and the third connector 170, for the need to inspect the sensor 130 (or other components inside the indoor unit 100), on the one hand, the operator can remove the third connector 170 to remove the second plate 113. At this time, the first connector 160 passes through the first connecting side 1123 and connects to the sensor 130, so the sensor 130 remains connected to the first plate 112. Therefore, removing the second plate 113 does not affect the installation and positioning of the sensor 130; on the other hand... When it is necessary to remove sensor 130, in some installation methods, sensor 130 needs to be supported to stably remove it. Therefore, the above-mentioned design allows the operator to first remove the second plate 113 by removing the third connector 170, thereby exposing part of the first opening 1111. At this time, sensor 130 is still connected to the first plate 112. The operator can then insert their hand or a tool into the first opening 1111 to stabilize sensor 130, so as to remove sensor 130 by removing the first connector 160. In addition, the third connector 170 can also connect the first plate 112 and the second plate 113, thereby simplifying the connection structure. The third connector 170 can not only stabilize the connection of sensor 130, but also connect the first plate 112 and the second plate 113, without the need for an additional connector to connect the first plate 112 and the second plate 113.

[0084] Furthermore, referring to Figure 12, in some other embodiments, the second connecting side 1133 is located on the side of the first connecting side 1123 facing the heat exchanger 120, the sensor 130 is connected to the second connecting side 1133, the indoor unit 100 also includes a second connector 600, the second connector 600 passes through the second connecting side 1133 and connects to the sensor 130, and the first connecting side 1123 is provided with a relief groove 11331 for avoiding the second connector 600.

[0085] Referring to Figures 2 and 6, the structural arrangement of the first plate 112 and the second plate 113 is defined as follows: the first direction X is perpendicular to the axial direction L of the first opening 1111, and the second direction Y is perpendicular to both the first direction X and the axial direction L. Based on this, in some embodiments, the first plate 112 is located at the boundary between one side of the first opening 1111 along the first direction X and the other side of the first opening 1111 along the second direction Y. The side of the first plate 112 opposite to the first direction X is designated as the second side 1121, and the side opposite to the second direction Y is designated as the third side 1122. The second side 1121 and the third side 1122 are arranged adjacent to each other. The second plate 113 has a first side 1131 connecting the third side 1122 and a fourth side 1132 connecting the second side 1121. It is understood that the first plate 112 can be located at the edge of the first opening 1111. Referring to Figures 2 and 6, in the illustrated embodiment, the edge of the first opening 1111 is rectangular, and the first plate 112 is located at the apex of this rectangle and is also rectangular. Therefore, the second plate 113 can have a fourth side 1132 opposite to the first plate 112 along the first direction X and a first side 1131 opposite to the first plate 112 along the second direction Y. The fourth side 1132 connects to the second side 1121, and the first side 1131 connects to the third side 1122. Combining the rectangular first opening 1111 and the first plate 112 in the above embodiment, the second plate 113 can be L-shaped, and the two folded edges of the L-shape correspond to the first side 1131 and the fourth side 1132. By configuring the first plate 112 and the second plate 113 as described above, the shapes of the first plate 112 and the second plate 113 can be better matched, and the installation is more stable and the positioning is more convenient. In addition, in conjunction with the aforementioned embodiment regarding the first connecting side 1123 and the second connecting side 1133, when the first side 1131 is connected to the third side 1122, the first side 1131 is the second connecting side 1133, and the third side 1122 is the first connecting side 1123.

[0086] An embodiment of the second aspect of this application also provides an air handling unit, including an indoor unit 100, an outdoor unit, and a duct assembly of any of the above embodiments, the duct assembly connecting the indoor unit 100 and the outdoor unit. The outdoor unit includes a first internal connector 190.

[0087] For details regarding the various configurations of the air handling unit, please refer to the relevant descriptions and technologies of the foregoing embodiments; further details will not be repeated here. Thanks to the improvements made to the indoor unit 100 in the foregoing embodiments, the air handling unit of the second aspect of this application has the same technical effects as the indoor unit 100 in the foregoing embodiments. Further details will not be repeated here.

[0088] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the content of the specification and drawings of this application under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. Indoor unit, including: A housing assembly includes a housing body, a first plate, and a second plate. The housing body has a first opening, and the first plate and the second plate are connected to the housing body, with the first plate and the second plate together covering the first opening. A heat exchanger, disposed within the shell assembly, includes heat exchange piping for transporting the heat exchange medium, and an external connector is provided on the side of the heat exchange piping facing the first opening, the external connector passing through the first plate; and A sensor for detecting the concentration of the heat exchange medium in its surroundings, the sensor being disposed within the housing assembly and connected to the first plate and / or the second plate.

2. The indoor unit as described in claim 1, wherein, The plane perpendicular to the axial direction of the first opening is the projection plane. The heat exchanger forms a first orthographic projection on the projection plane, and the sensor forms a second orthographic projection on the projection plane. The first orthographic projection and the second orthographic projection at least partially overlap.

3. The indoor unit as described in claim 1 or 2, wherein, The sensor is connected to the first plate and is located on the side of the first plate near the second plate; or The sensor is connected to the second plate, and the sensor is located on the side of the second plate near the external connector; or The sensors are respectively connected to the first plate and the second plate. When viewed along the axial direction of the first opening, the sensors are at least partially overlapped with the first plate and at least partially overlapped with the second plate.

4. The indoor unit as described in any one of claims 1 to 3, further comprising a first drip tray, wherein, The first water receiving tray is disposed inside the housing assembly and located on one side of the heat exchanger along a first direction, the first direction being perpendicular to the axial direction of the first opening. The first water receiving tray is used to receive condensate falling from the outer wall of the heat exchanger along the first direction. as well as Along the first direction, the sensor is located on the side of the first water receiving tray near the external connector.

5. The indoor unit as described in claim 4 further includes a second water drip tray, wherein, The second water receiving tray is disposed inside the housing assembly and located on one side of the heat exchanger along the second direction, which is perpendicular to the first direction and the axial direction of the first opening. The second water receiving tray is used to receive condensate falling along the second direction on the outer wall of the heat exchanger. The indoor unit has a first installation state and a second installation state. In the first installation state, the first water tray is located below the heat exchanger. In the second installation state, the second water tray is located below the heat exchanger. as well as Along the second direction, the sensor is located on the side of the second water receiving tray near the external connector; or, the second plate has a first side arranged opposite to the external connector along the second direction, and the sensor is located on the side of the external connector near the first side.

6. The indoor unit as described in claim 4 or 5, wherein, The first water receiving tray includes a side plate near the first opening, the sensor is located on the side of the side plate facing the external connector, and one end of the sensor abuts against the side wall of the side plate away from the first opening.

7. The indoor unit as described in claim 6, wherein, The sensor includes a sensing body and a fixing bracket, the fixing bracket connecting the first plate and / or the second plate, and the sensing body connecting to the fixing bracket; and The fixed bracket has a stepped portion at one end facing the side plate. The stepped portion has a first stepped surface that fits against the first plate and / or the second plate and a second stepped surface that fits against the side wall of the side plate away from the first opening. The second stepped surface is located on the side of the first stepped surface closer to the heat exchanger.

8. The indoor unit as described in any one of claims 1 to 7, wherein, The sensor includes a sensing body and a fixed bracket, the fixed bracket being connected to the first plate and / or the second plate, and the sensing body being connected to the fixed bracket.

9. The indoor unit as described in claim 8, wherein, The sensing body is connected to the side of the fixed bracket facing the heat exchanger; and / or The sensing body includes a detection port suitable for conducting heat exchange medium, and the detection port is disposed away from the fixed bracket.

10. The indoor unit as described in claim 8 or 9, wherein, The fixed bracket is connected to the first plate and located on the side of the first plate close to the second plate. The sensing body includes a terminal, which is located on the side of the sensing body away from the second plate.

11. The indoor unit as described in any one of claims 8 to 10, wherein, The fixed bracket includes a water-blocking part, which is disposed on one side of the sensing body along the axis perpendicular to the first opening; or The fixed bracket includes a water-blocking part, which is located on one side of the sensing body along the axis perpendicular to the first opening, and the water-blocking part is arranged at an angle.

12. The indoor unit as described in any one of claims 1 to 11, wherein, The second plate is detachably connected to the first plate. The first plate includes a first connecting side that connects to the second plate, and the second plate includes a second connecting side that connects to the first plate. The first connecting side and the second connecting side are stacked on top of each other. The first connection side is located on the side of the second connection side facing the heat exchanger, or the second connection side is located on the side of the first connection side facing the heat exchanger.

13. The indoor unit as described in claim 12, wherein, The first connecting side is located on the side of the second connecting side facing the heat exchanger. The sensor is connected to the first connecting side. The indoor unit also includes a first connecting member, which passes through the first connecting side and connects to the sensor. The second connecting side is provided with a clearance groove to avoid the first connecting member; or The second connection side is located on the side of the first connection side facing the heat exchanger. The sensor is connected to the second connection side. The indoor unit also includes a second connector. The second connector passes through the second connection side and connects to the sensor. The first connection side is provided with a clearance groove for avoiding the first connector.

14. The indoor unit as described in claim 12 or 13, further comprising a third connector, wherein, The third connector passes through the second connecting side and the first connecting side and connects to the sensor.

15. The indoor unit as described in any one of claims 1 to 14, wherein, The direction perpendicular to the axis of the first opening is the first direction, and the direction perpendicular to both the first direction and the axis is the second direction. The first plate is located on one side of the first opening along the first direction and on one side of the first opening along the second direction. The side of the first plate opposite to the first direction is the second side, and the side opposite to the second direction is the third side. The second side and the third side are arranged adjacent to each other. The second plate has a first side connecting the third side and a fourth side connecting the second side.

16. An air handling unit, comprising: The indoor unit according to any one of claims 1-15; Outdoor unit; as well as A piping assembly that connects the indoor unit and the outdoor unit.

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