Indoor unit and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses an indoor unit and an air conditioner. The indoor unit comprises a shell, the shell comprises a shell body and a liquid inlet and outlet coaming, the shell body is provided with a notch, and the liquid inlet and outlet coaming covers the notch; the liquid inlet and outlet pipe penetrates out of the shell body through the liquid inlet and outlet coaming; the evaporator is arranged in the shell body, a heat exchange pipe of the evaporator communicates with the liquid inlet and outlet pipe, and a containing cavity is defined between the end, close to the liquid inlet and outlet surrounding plate, of the evaporator and the liquid inlet and outlet surrounding plate; and the refrigerant leakage detector is arranged in the accommodating cavity. In this way, when the refrigerant leakage detector is damaged, the liquid inlet and outlet coaming can be taken down, so that the refrigerant leakage detector can be conveniently taken out for maintenance, or under the condition that the liquid inlet and outlet coaming is not taken out, the liquid inlet and outlet coaming is maintained through the notch, so that maintenance of the refrigerant leakage detector is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, specifically relates to an indoor unit, air conditioner. BACKGROUND

[0002] When the air conditioner uses the refrigerant with flammable and explosive characteristics such as R32, the safety of use is particularly important. The relevant regulations stipulate that if the refrigerant leaks, it needs to be detected within a specified time.

[0003] Therefore, the related art discloses an indoor unit and an air conditioner, the indoor unit comprising: a bottom plate, an evaporator and a refrigerant sensing assembly, the bottom plate is provided with a mounting position, the mounting position is located in the pipe space of the bottom plate, the evaporator is arranged on the bottom plate, and the heat exchange pipe of the evaporator is connected with the refrigerant pipe penetrating the pipe space, the refrigerant sensing assembly comprises a fixing seat and a refrigerant sensor, the refrigerant sensor is arranged on the fixing seat, and the fixing seat is arranged on the mounting position. Therefore, by arranging the refrigerant sensing assembly and arranging the refrigerant sensing assembly on the mounting position in the pipe space, the detection accuracy and response speed of the refrigerant sensing assembly can be improved.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The refrigerant sensing assembly is located in the pipe space of the bottom plate, and when the refrigerant sensing assembly is damaged, it is not easy to replace.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. INVENTION CONTENTS

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor does it determine the key / important components or delineate the protection scope of these embodiments, but serves as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide an indoor unit and an air conditioner to solve the problem that the refrigerant sensing assembly is not easy to replace in the related art.

[0009] According to a first aspect of the embodiments of the present application, an indoor unit is provided, comprising: a shell comprising a shell body and an inlet and outlet liquid surrounding plate, the shell body is provided with a gap, and the inlet and outlet liquid surrounding plate cover is arranged at the gap; an inlet and outlet liquid pipe penetrating the shell body through the inlet and outlet liquid surrounding plate; an evaporator arranged in the shell body, the heat exchange pipe of the evaporator is in communication with the inlet and outlet liquid pipe, and a containing cavity is surrounded between the end of the evaporator close to the inlet and outlet liquid surrounding plate and the inlet and outlet liquid surrounding plate; a refrigerant leakage detector arranged in the containing cavity.

[0010] The refrigerant leakage detector is arranged in the accommodating cavity and located between the evaporator and the liquid inlet-outlet baffle at one end of the evaporator close to the liquid inlet-outlet baffle, that is, the refrigerant leakage detector is arranged close to the liquid inlet-outlet baffle. When the refrigerant leakage detector is damaged, the liquid inlet-outlet baffle can be removed, so that the refrigerant leakage detector can be conveniently taken out for maintenance, or the liquid inlet-outlet baffle can be maintained through the gap without being removed, so that the maintenance of the refrigerant leakage detector is facilitated.

[0011] The evaporator comprises heat exchange pipes and fins arranged on the outer surfaces of the heat exchange pipes. The number of the liquid inlet-outlet pipes is two, including a first liquid inlet-outlet pipe and a second liquid inlet-outlet pipe. The first liquid inlet-outlet pipe is connected to one end of the heat exchange pipes, and the second liquid inlet-outlet pipe is connected to the other end of the heat exchange pipes. The refrigerant in the heat exchange pipes flows in through one of the first liquid inlet-outlet pipe and the second liquid inlet-outlet pipe and flows out through the other of the first liquid inlet-outlet pipe and the second liquid inlet-outlet pipe.

[0012] In order to realize the penetration of the first liquid inlet-outlet pipe and the second liquid inlet-outlet pipe from the shell, the shell comprises a shell body and a liquid inlet-outlet baffle. The liquid inlet-outlet baffle cover is arranged at the gap and cooperates with the shell body to form a pipe outlet. The first liquid inlet-outlet pipe and the second liquid inlet-outlet pipe extend out of the shell through the pipe outlet.

[0013] Optionally, the liquid inlet-outlet baffle is arranged at one side of the evaporator in the length direction, and the refrigerant leakage detector is located between one end of the evaporator in the length direction and the liquid inlet-outlet baffle.

[0014] In the length direction of the evaporator, the evaporator and the liquid inlet-outlet baffle are arranged in sequence. The number of the heat exchange pipes is multiple. The multiple heat exchange pipes are connected end to end. Each heat exchange pipe is oppositely arranged and extends along the length direction of the evaporator. The connection positions of the two heat exchange pipes are located at the end portions in the length direction of the evaporator, so that there are multiple connection positions of the heat exchange pipes at one end of the evaporator in the length direction. The connection position is a bent pipe, that is, a bend. Therefore, the refrigerant leakage is prone to occur at the connection position.

[0015] The liquid inlet-outlet baffle is arranged at one side of the evaporator in the length direction, so that the refrigerant leakage detector is located between one end of the evaporator in the length direction and the liquid inlet-outlet baffle, that is, the refrigerant leakage detector is arranged close to the connection position of the two heat exchange pipes. The refrigerant leakage detector can timely detect the leakage of the refrigerant at the connection position while meeting the easy maintenance.

[0016] Optionally, the refrigerant leakage detector is arranged corresponding to the gap, for example, the normal projection of the refrigerant leakage detector on the plane where the gap is located is at least partially located in the gap.

[0017] The refrigerant leakage detector is arranged corresponding to the gap. In this way, the refrigerant leakage detector can be taken out through the gap, or the refrigerant leakage detector can be maintained through the gap without being taken out.

[0018] Optionally, the refrigerant leakage detector is arranged on the inner wall surface of the inlet-outlet liquid baffle.

[0019] In this way, when the inlet-outlet liquid baffle is disassembled, the refrigerant leakage detector can be taken down together with the inlet-outlet liquid baffle, simplifying the disassembly process of the refrigerant leakage detector. Moreover, the refrigerant leakage detector is located on the inner wall surface of the inlet-outlet liquid baffle, so that the refrigerant leakage detector is arranged close to the evaporator. In this way, when refrigerant leakage occurs at different positions of the evaporator, the refrigerant can quickly spread to the refrigerant leakage detector, so that the detection of the refrigerant leakage detector is more accurate, and the detection sensitivity is improved.

[0020] Optionally, the refrigerant leakage detector is detachably connected with the inlet-outlet liquid baffle.

[0021] After the inlet-outlet liquid baffle is disassembled, the refrigerant leakage detector is taken down from the inlet-outlet liquid baffle, so as to maintain or replace the refrigerant leakage detector.

[0022] As to the detachable mode of the refrigerant leakage detector and the inlet-outlet liquid baffle, it can be screw connection, clamping or other forms.

[0023] Optionally, the refrigerant leakage detector is arranged on the inner wall surface of the inlet-outlet liquid baffle.

[0024] When the refrigerant leakage detector is installed, an external force is applied to the refrigerant leakage detector from the refrigerant leakage detector towards the inlet-outlet liquid baffle, so that the limiting protrusion is inserted into the limiting hole, and the refrigerant leakage detector is connected with the inlet-outlet liquid baffle. When the refrigerant leakage detector is disassembled, an external force is applied to the refrigerant leakage detector from the inlet-outlet liquid baffle towards the refrigerant leakage detector, so that the limiting protrusion is separated from the limiting hole, and the refrigerant leakage detector is separated from the inlet-outlet liquid baffle.

[0025] Optionally, the probe of the refrigerant leakage detector faces the evaporator.

[0026] The evaporator is provided with heat exchange pipes, and there is a bend at the connection of the two heat exchange pipes. Refrigerant leakage is prone to occur at the bend. Therefore, the probe of the refrigerant leakage detector faces the evaporator, so that the probe can timely detect the leakage of refrigerant at the evaporator, thereby avoiding the fire caused by the leakage of flammable refrigerant, reducing the safety hazard, and improving the use safety of the air conditioner.

[0027] Moreover, the probe of the refrigerant leakage detector is directed towards the evaporator, and the accuracy of the refrigerant leakage detection can be improved.

[0028] Optionally, the indoor unit further comprises a fan, and the shell body defines an air duct, the fan and the evaporator are arranged in the air duct, and the accommodating cavity is in communication with the air duct.

[0029] The shell body defines an air duct, the air duct comprises a first air duct section and a second air duct section in communication, the first air duct section and the second air duct section are arranged in sequence along the flow direction of the airflow in the air duct, or the second air duct section and the first air duct section are arranged in sequence along the flow direction of the airflow in the air duct. The fan is arranged in the first air duct section, and the evaporator is arranged in the second air duct section. The accommodating cavity is located outside the second air duct section, and the accommodating cavity is in communication with the air duct through the communication with the second air duct section. There is no volute in the second air duct section, so that the remaining space in the second air duct section is larger, the air flow in the second air duct section is better than that in the first air duct section, the leaked refrigerant can diffuse to the accommodating cavity through the second air duct section more quickly, and the refrigerant leakage can be detected more timely, especially when the fan is not turned on.

[0030] The air flows more smoothly in the second air duct section, and the refrigerant leakage detector is arranged in the accommodating cavity, which is arranged close to the second air duct section, so that the refrigerant leakage detector can detect the refrigerant leakage more quickly, and the sensitivity of the refrigerant leakage detector can be further improved. In this way, when the refrigerant leakage occurs at different positions in the width direction of the evaporator, the refrigerant can quickly diffuse to the refrigerant leakage detector through the second air duct section, so that the detection of the refrigerant leakage detector is more accurate.

[0031] Optionally, the inlet and outlet liquid surrounding plate is detachably connected with the shell body.

[0032] The detachable connection can be various connection modes such as clamping and / or screw connection.

[0033] Optionally, the inlet and outlet liquid surrounding plate comprises a first connecting part and a second connecting part, the shell body comprises a first connecting matching part and a second connecting matching part, the first connecting part is matched with the first connecting matching part, the first connecting part is arranged on the inner side of the first connecting matching part and abuts against the first connecting matching part, the second connecting part is matched with the second connecting matching part, the second connecting part is arranged on the outer side of the second connecting matching part, and the second connecting part is connected with the second connecting matching part, so as to realize the connection between the inlet and outlet liquid surrounding plate and the shell body. The first connecting part and the first connecting matching part are connected by clamping, and the second connecting part and the second connecting matching part are connected by screw connection. The clamping and screw connection modes make the inlet and outlet liquid surrounding plate convenient to disassemble and assemble, can improve the disassembly and assembly efficiency, save cost and firmly fix.

[0034] The inlet and outlet liquid surrounding plate is detachably connected with the shell body, which can improve the assembly efficiency and make it more convenient to check the refrigerant leakage detector.

[0035] Optionally, the liquid inlet and outlet surrounding plate is provided with a first opening penetrating through the edge thereof, the shell body is provided with a second opening communicating with the gap, and the first opening and the second opening are combined to form an outlet pipe opening, and the liquid inlet and outlet pipe passes through the outlet pipe opening to pass through the shell body.

[0036] The liquid inlet and outlet surrounding plate is provided with a first opening, the shell body is provided with a second opening, and the first opening and the second opening are combined to form an outlet pipe opening, and the liquid inlet and outlet pipe passes through the outlet pipe opening to pass through the shell body.

[0037] The liquid inlet and outlet surrounding plate is provided with two first openings, and the corresponding shell body is provided with two second openings, one first opening and one second opening are combined to form a first outlet pipe opening, and the other first opening and the other second opening are combined to form a second outlet pipe opening, wherein the outlet pipe opening includes the first outlet pipe opening and the second outlet pipe opening.

[0038] According to the second aspect of the embodiment of the utility model, provide a kind of air conditioner, including the indoor unit as described in any one of the above embodiments.

[0039] The air conditioner can be a ceiling-mounted air conditioner, a ducted air conditioner, a wall-mounted air conditioner or a cabinet air conditioner.

[0040] The air conditioner provided by the embodiment of the second aspect of the utility model has all the beneficial effects of the indoor unit as described in any one of the above embodiments, and thus the detailed description is omitted here.

[0041] The general description above and the following description below are exemplary and explanatory only and are not intended to be limiting of the application. BRIEF DESCRIPTION OF DRAWINGS

[0042] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are schematic and are not intended to be limiting of the embodiments, in which like reference numerals refer to like elements in the various figures and in which:

[0043] Figure 1 is a structural schematic diagram of an indoor unit provided by an embodiment of the present disclosure;

[0044] Figure 2 is Figure 1 is an enlarged structural schematic diagram of part A in FIG.

[0045] Figure 3 is an exploded schematic diagram of an indoor unit provided by an embodiment of the present disclosure;

[0046] Figure 4 is Figure 3 is an enlarged structural schematic diagram of part B in FIG.

[0047] Figure 5is a structural schematic diagram of another indoor unit provided by an embodiment of the present disclosure;

[0048] Figure 6 is Figure 5 is a sectional view of the indoor unit in the direction of A-A;

[0049] Figure 7 is Figure 5 is a sectional view of the indoor unit in the direction of B-B;

[0050] Figure 8 is a structural schematic diagram of a part of an indoor unit provided by an embodiment of the present disclosure;

[0051] Figure 9 is a structural schematic diagram of another part of an indoor unit provided by an embodiment of the present disclosure;

[0052] Figure 10 is an assembly structural schematic diagram of a liquid inlet and outlet coaming and a refrigerant leakage detector provided by an embodiment of the present disclosure.

[0053] Reference signs:

[0054] 100: a housing;

[0055] 10: a housing body; 101: a notch; 102: a first air duct section; 103: a second air duct section; 104: an air duct; 105: a second opening; 106: a first connecting fitting part; 107: a second connecting fitting part; 108: a containing cavity;

[0056] 20: a liquid inlet and outlet coaming; 201: a first connecting part; 202: a second connecting part; 203: a first opening; 204: a limiting hole;

[0057] 301: a first outlet pipe; 302: a second outlet pipe;

[0058] 40: a refrigerant leakage detector; 401: a probe; 402: a limiting protrusion;

[0059] 50: an evaporator; 501: a heat exchange pipe;

[0060] 60: a fan;

[0061] 701: a first liquid inlet and outlet pipe; 702: a second liquid inlet and outlet pipe. DETAILED DESCRIPTION

[0062] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a sufficient understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0063] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances in order to describe the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0064] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0065] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0066] Unless otherwise specified, the term "a plurality of" means two or more.

[0067] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0068] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B, which means: A, or B, or, A and B, the three relationships.

[0069] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0070] In combination with Figures 1-10 As shown in the accompanying drawings, the present disclosure provides an indoor unit, comprising a shell 100, an inlet-outlet liquid pipe, an evaporator 50 and a refrigerant leakage detector 40.

[0071] The shell 100 comprises a shell body 10 and an inlet-outlet liquid coaming 20, the shell body 10 is provided with a notch 101, and the inlet-outlet liquid coaming 20 is arranged at the notch 101.

[0072] As Figures 1 to 4 shown, the inlet-outlet liquid pipe passes through the inlet-outlet liquid coaming 20 and out of the shell body 10.

[0073] The evaporator 50 is arranged in the shell body 10, and the heat exchange pipe 501 of the evaporator 50 is in communication with the inlet-outlet liquid pipe. Figure 8 and Figure 9 As shown, the evaporator 50 is arranged between the inlet-outlet liquid coaming 20 and the end of the evaporator 50 close to the inlet-outlet liquid coaming 20 to form a containing cavity 108.

[0074] The refrigerant leakage detector 40 is arranged in the containing cavity 108.

[0075] The refrigerant leakage detector 40 is arranged in the containing cavity 108, between the evaporator 50 close to the inlet-outlet liquid coaming 20 and the inlet-outlet liquid coaming 20, i.e. the refrigerant leakage detector 40 is arranged close to the inlet-outlet liquid coaming 20, so that when the refrigerant leakage detector 40 is damaged, the inlet-outlet liquid coaming 20 can be removed, so as to facilitate the removal of the refrigerant leakage detector 40 for maintenance, or in the case that the inlet-outlet liquid coaming 20 is not removed, the inlet-outlet liquid coaming 20 is maintained through the notch 101, so as to facilitate the maintenance of the refrigerant leakage detector 40.

[0076] As Figure 9 shown, the evaporator 50 comprises a heat exchange pipe 501 and fins arranged on the outer surface of the heat exchange pipe 501. The number of inlet-outlet liquid pipes is two, comprising a first inlet-outlet liquid pipe 701 and a second inlet-outlet liquid pipe 702, the first inlet-outlet liquid pipe 701 is in communication with one end of the heat exchange pipe 501, and the second inlet-outlet liquid pipe 702 is in communication with the other end of the heat exchange pipe 501. The refrigerant in the heat exchange pipe 501 flows into one of the first inlet-outlet liquid pipe 701 and the second inlet-outlet liquid pipe 702, and flows out through the other of the first inlet-outlet liquid pipe 701 and the second inlet-outlet liquid pipe 702.

[0077] To realize the first liquid inlet and outlet pipe 701 and the second liquid inlet and outlet pipe 702 to pass through the shell 100, the shell 100 includes the shell body 10 and the liquid inlet and outlet surrounding plate 20. The liquid inlet and outlet surrounding plate 20 is arranged at the gap 101 and cooperates with the shell body 10 to form an outlet pipe opening, and the first liquid inlet and outlet pipe 701 and the second liquid inlet and outlet pipe 702 pass through the outlet pipe opening to extend out of the shell 100.

[0078] Optionally, the liquid inlet and outlet surrounding plate 20 is arranged at one side of the evaporator 50 in the length direction (e.g. the left-right direction), and the refrigerant leakage detector 40 is located between one end of the evaporator 50 in the length direction and the liquid inlet and outlet surrounding plate 20. Figure 8

[0079] In the length direction of the evaporator 50, the evaporator 50 and the liquid inlet and outlet surrounding plate 20 are arranged in sequence. The number of the heat exchange pipes 501 is multiple, and the multiple heat exchange pipes 501 are connected end to end, each heat exchange pipe 501 is oppositely arranged and extends along the length direction of the evaporator 50. The connection position of the two heat exchange pipes 501 is located at the end of the evaporator 50 in the length direction, so that there are multiple connection positions (e.g. position M shown in the figure) of the heat exchange pipes 501 at one end of the evaporator 50 in the length direction, and the connection position is a bend pipe, i.e. a bend, so that the refrigerant leakage is prone to occur at the connection position. Figure 9

[0080] The liquid inlet and outlet surrounding plate 20 is arranged at one side of the evaporator 50 in the length direction, so that the refrigerant leakage detector 40 is located between one end of the evaporator 50 in the length direction and the liquid inlet and outlet surrounding plate 20, i.e. the refrigerant leakage detector 40 is arranged close to the connection position of the two heat exchange pipes 501, so that the refrigerant leakage detector 40 can timely detect the refrigerant leakage at the connection position while meeting the easy maintenance.

[0081] Optionally, as shown in the figure, the refrigerant leakage detector 40 is arranged corresponding to the gap 101, for example, the normal projection of the refrigerant leakage detector 40 on the plane where the gap 101 is located is at least partially located in the gap 101. Figure 4

[0082] The refrigerant leakage detector 40 is arranged corresponding to the gap 101, so that the refrigerant leakage detector 40 can be taken out through the gap 101, or the refrigerant leakage detector 40 can be maintained through the gap 101 without being taken out.

[0083] Optionally, as shown in the figure, the refrigerant leakage detector 40 is arranged on the inner wall surface of the liquid inlet and outlet surrounding plate 20. Figure 10

[0084] ​​​​Thus, when the liquid inlet and outlet surrounding plate 20 is disassembled, the refrigerant leakage detector 40 can be removed together with the liquid inlet and outlet surrounding plate 20, thus simplifying the disassembly process of the refrigerant leakage detector 40. Moreover, the refrigerant leakage detector 40 is located on the inner wall surface of the liquid inlet and outlet surrounding plate 20, so that the refrigerant leakage detector 40 is arranged close to the evaporator 50. Thus, when refrigerant leakage occurs at various positions of the evaporator 50, the refrigerant can quickly spread to the refrigerant leakage detector 40, so that the detection of the refrigerant leakage detector 40 is more accurate, and the detection sensitivity is improved.

[0085] Optionally, the refrigerant leakage detector 40 is detachably connected with the liquid inlet and outlet surrounding plate 20.

[0086] After the liquid inlet and outlet surrounding plate 20 is disassembled, the refrigerant leakage detector 40 is removed from the liquid inlet and outlet surrounding plate 20, so as to maintain or replace the refrigerant leakage detector.

[0087] As to the detachable manner of the refrigerant leakage detector 40 and the liquid inlet and outlet surrounding plate 20, it can be screw connection, clamping or other forms.

[0088] For example, as shown in Figure 4 , a limiting protrusion 402 is arranged on the refrigerant leakage detector 40. The limiting protrusion 402 is in a cross shape. One end of the limiting protrusion 402 is connected with the refrigerant leakage detector 40, and the other end is a free end and is located on the side of the refrigerant leakage detector 40 facing the liquid inlet and outlet surrounding plate 20. A guide inclined surface is arranged on the free end of the limiting protrusion 402. The guide inclined surface has a guiding effect, which reduces the difficulty of installing the refrigerant leakage detector 40 on the liquid inlet and outlet surrounding plate 20, thereby improving the installation efficiency between the refrigerant leakage detector 40 and the liquid inlet and outlet surrounding plate 20. The liquid inlet and outlet surrounding plate 20 is provided with a limiting hole 204 matched with the limiting protrusion 402. The limiting protrusion 402 is inserted into the limiting hole 204, so as to realize the detachable connection between the refrigerant leakage detector 40 and the liquid inlet and outlet surrounding plate 20.

[0089] When the refrigerant leakage detector 40 is installed, an external force is applied to the refrigerant leakage detector 40 from the refrigerant leakage detector 40 towards the liquid inlet and outlet surrounding plate 20, so that the limiting protrusion 402 is inserted into the limiting hole 204, and the refrigerant leakage detector 40 is connected with the liquid inlet and outlet surrounding plate 20. When the refrigerant leakage detector 40 is disassembled, an external force is applied to the refrigerant leakage detector 40 from the liquid inlet and outlet surrounding plate 20 towards the refrigerant leakage detector 40, so that the limiting protrusion 402 is separated from the limiting hole 204, thereby realizing the separation between the refrigerant leakage detector 40 and the liquid inlet and outlet surrounding plate 20.

[0090] Optionally, as shown in Figure 7 , the probe 401 of the refrigerant leakage detector 40 faces the evaporator 50.

[0091] The evaporator 50 is provided with heat exchange pipes 501, and a bend exists at the connection of the two heat exchange pipes 501. The refrigerant is prone to leakage at the bend. Therefore, the probe 401 of the refrigerant leakage detector 40 is directed towards the evaporator 50, so that the probe 401 can timely detect the leakage of the refrigerant at the evaporator 50, thereby avoiding the fire caused by the leakage of the flammable refrigerant, reducing the safety hazard, and improving the use safety of the air conditioner.

[0092] Moreover, the probe 401 of the refrigerant leakage detector 40 is directed towards the evaporator 50, which can improve the accuracy of the detection of the refrigerant leakage.

[0093] Optionally, as shown in Figure 8 and Figure 9 , the indoor unit further comprises a fan 60. The shell body 10 defines an air duct 104, and the fan 60 and the evaporator 50 are arranged in the air duct. The accommodating cavity 108 is in communication with the air duct.

[0094] The shell body 10 defines an air duct, which comprises a first air duct section 102 and a second air duct section 103 in communication. The first air duct section 102 and the second air duct section 103 are arranged in sequence along the flow direction of the airflow in the air duct, or the second air duct section 103 and the first air duct section 102 are arranged in sequence along the flow direction of the airflow in the air duct. The fan 60 is arranged in the first air duct section 102, and the evaporator 50 is arranged in the second air duct section 103. The accommodating cavity 108 is located outside the second air duct section 103. The accommodating cavity 108 is in communication with the air duct through the communication with the second air duct section 103. There is no volute in the second air duct section 103, so that the remaining space in the second air duct section 103 is larger. The air flow in the second air duct section 103 is better than that in the first air duct section 102. The leaked refrigerant can spread to the accommodating cavity 108 through the second air duct section 103 more quickly, so that the refrigerant leakage can be detected more timely, especially when the fan 60 is not turned on.

[0095] The air flows more smoothly in the second air duct section 103. The refrigerant leakage detector 40 is arranged in the accommodating cavity 108, which is arranged close to the second air duct section 103. Therefore, the refrigerant leakage detector 40 can detect the refrigerant leakage more quickly, and the sensitivity of the refrigerant leakage detector 40 can be further increased. In this way, when the refrigerant leakage occurs at each position in the width direction of the evaporator 50, the refrigerant can spread to the refrigerant leakage detector 40 quickly through the second air duct section 103, so that the detection of the refrigerant leakage detector 40 is more accurate.

[0096] Optionally, the inlet and outlet liquid surrounding plate 20 is detachably connected with the shell body 10.

[0097] The detachable connection can be a variety of connection modes such as clamping and / or screw connection.

[0098] Optionally, as shown in Figure 3As shown, the liquid inlet and outlet surrounding plate 20 includes a first connecting portion 201 and a second connecting portion 202, the shell body 10 includes a first connecting fitting portion 106 and a second connecting fitting portion 107, the first connecting portion 201 is matched with the first connecting fitting portion 106, the first connecting portion 201 is arranged on the inner side of the first connecting fitting portion 106 and abuts with the first connecting fitting portion 106, the second connecting portion 202 is matched with the second connecting fitting portion 107, the second connecting portion 202 is arranged on the outer side of the second connecting fitting portion 107 and is connected with the second connecting fitting portion 107, so as to realize the connection of the liquid inlet and outlet surrounding plate 20 and the shell body 10, the first connecting portion 201 and the first connecting fitting portion 106 are connected by clamping, and the second connecting portion 202 and the second connecting fitting portion 107 are connected by screws, so that the liquid inlet and outlet surrounding plate 20 is convenient to disassemble and install, the disassembly and assembly efficiency can be improved, the cost is saved and firm fixation is realized.

[0099] The liquid inlet and outlet surrounding plate 20 is detachably connected with the shell body 10, so that the assembly efficiency is improved and the refrigerant leakage detector 40 is more convenient to check.

[0100] Optionally, as shown, Figure 3 The liquid inlet and outlet surrounding plate 20 is provided with a first opening 203 penetrating the edge thereof, the shell body 10 is provided with a second opening 105 communicating with the notch 101, the first opening 203 and the second opening 105 are spliced to form a pipe outlet, and the liquid inlet and outlet pipe passes out of the shell body 10 through the pipe outlet.

[0101] The liquid inlet and outlet surrounding plate 20 is provided with a first opening 203, the shell body 10 is provided with a second opening 105, and the first opening 203 and the second opening 105 are correspondingly spliced to form a pipe outlet through which the liquid inlet and outlet pipe passes out.

[0102] The liquid inlet and outlet surrounding plate 20 is provided with two first openings 203, and the shell body 10 is correspondingly provided with two second openings 105, one first opening 203 and one second opening 105 are spliced to form a first pipe outlet 301, and the other first opening 203 and the other second opening 105 are spliced to form a second pipe outlet 302, wherein the pipe outlet includes the first pipe outlet 301 and the second pipe outlet 302.

[0103] According to the second aspect of the embodiment of the utility model, provide a kind of air conditioner, including the indoor unit as described in any one of the above embodiments.

[0104] The air conditioner can be a ceiling-mounted air conditioner, a ducted air conditioner, a wall-mounted air conditioner or a cabinet air conditioner.

[0105] The air conditioner provided by the second aspect of the embodiment of the utility model has all the beneficial effects of the indoor unit as described in any one of the above embodiments, and thus the detailed description is omitted.

[0106] The above description and drawings enough illustrate embodiments of the disclosure to enable a person skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments are merely representative of the possible variations. Individual components and functions are optional and the order of operations can vary, unless explicitly required. Parts and features of some embodiments can be included or replace parts and features of other embodiments. Embodiments of the disclosure are not limited to the structures already described above and shown in the drawings, and can be variously modified and changed without departing from the scope thereof. The scope of the disclosure is limited only by the appended claims.

Claims

1. An indoor unit, characterized by, The application relates to an indoor unit. The indoor unit comprises a shell, an inlet-outlet liquid plate, an inlet-outlet liquid pipe and a refrigerant leakage detector. The shell comprises a shell body and the inlet-outlet liquid plate, the shell body is provided with a gap, and the inlet-outlet liquid plate covers the gap. The inlet-outlet liquid pipe passes through the inlet-outlet liquid plate and penetrates the shell body. An evaporator is arranged in the shell body, the heat exchange pipe of the evaporator is connected with the inlet-outlet liquid pipe, and a containing cavity is arranged between the end of the evaporator close to the inlet-outlet liquid plate and the inlet-outlet liquid plate. The refrigerant leakage detector is arranged in the containing cavity.

2. The indoor unit according to claim 1, wherein the inlet-outlet liquid plate is arranged on one side of the evaporator in the length direction, and the refrigerant leakage detector is arranged between one end of the evaporator in the length direction and the inlet-outlet liquid plate.

3. The indoor unit according to claim 1, wherein the refrigerant leakage detector is arranged corresponding to the gap.

4. The indoor unit according to claim 1, wherein the refrigerant leakage detector is arranged on the inner wall surface of the inlet-outlet liquid plate.

5. The indoor unit according to claim 3, wherein the refrigerant leakage detector is detachably connected with the inlet-outlet liquid plate.

6. The indoor unit according to any one of claims 1 to 5, wherein the probe of the refrigerant leakage detector is directed towards the evaporator.

7. The indoor unit according to any one of claims 1 to 5, wherein the indoor unit further comprises a fan, the shell body defines an air duct, and the fan and the evaporator are arranged in the air duct, and the containing cavity is connected with the air duct.

8. The indoor unit according to any one of claims 1 to 5, wherein the inlet-outlet liquid plate is detachably connected with the shell body.

9. The indoor unit according to any one of claims 1 to 5, wherein the inlet-outlet liquid plate is provided with a first opening penetrating the edge thereof, the shell body is provided with a second opening connected with the gap, the first opening and the second opening are combined to form an outlet, and the inlet-outlet liquid pipe penetrates the shell body through the outlet. The application further relates to an indoor unit. The indoor unit comprises the indoor unit according to any one of claims 1 to 9. ​ ​ ​ ​ ​ 10. An air conditioner characterized by comprising: ​ ​

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