Air conditioner

Abstract

The invention provides an air conditioner which comprises a machine shell, a first refrigerant detection area is arranged in the machine shell, a second refrigerant detection area is arranged outside the machine shell, and the first refrigerant detection area communicates with the second refrigerant detection area; the indoor heat exchanger is arranged in the machine shell, and an input port and an output port of the indoor heat exchanger are located in the first refrigerant detection area; the refrigerant input pipe and the refrigerant output pipe are connected with an input port and an output port of the indoor heat exchanger respectively, and the ends, away from the indoor heat exchanger, of the refrigerant input pipe and the refrigerant output pipe are provided with piping joints; the tubing connector penetrates through the machine shell and is arranged to be connected with an indoor and outdoor unit connecting pipe located outside the machine shell, and the connecting portion of the tubing connector and the indoor and outdoor unit connecting pipe is located in the second refrigerant detection area; and the refrigerant detection sensors are arranged in the first refrigerant detection area and / or the second refrigerant detection area. According to the scheme, refrigerant leakage can be detected in time, so that flammable and explosive risks caused by refrigerant leakage are reduced.

Description

Technical Field

[0001] This article relates to but is not limited to electrical equipment technology, especially an air conditioner. Background Art

[0002] At present, some air conditioners cannot detect whether the refrigerant is leaking. When the refrigerant leaks for a period of time, there is a problem of high concentration of the leaked refrigerant, and some refrigerants are flammable, resulting in the risk of flammability and explosion. Summary of the invention

[0003] The present application provides an air conditioner that can detect refrigerant leakage in a timely manner, thereby reducing the risk of flammability and explosion caused by refrigerant leakage.

[0004] The present application provides an air conditioner, comprising: a casing, a first refrigerant detection area is provided in the casing, a second refrigerant detection area is provided outside the casing, and the first refrigerant detection area is connected to the second refrigerant detection area; an indoor heat exchanger is provided in the casing, and the input port and the output port of the indoor heat exchanger are located in the first refrigerant detection area; a refrigerant input pipe and a refrigerant output pipe are respectively connected to the input port and the output port of the indoor heat exchanger, and a pipe joint is provided at one end away from the indoor heat exchanger; the pipe joint is passed through the casing and is configured to be connected to an internal and external unit connecting pipe located outside the casing, and the connection portion between the pipe joint and the internal and external unit connecting pipe is located in the second refrigerant detection area; a refrigerant detection sensor, the refrigerant detection sensor is provided in the first refrigerant detection area and / or the second refrigerant detection area.

[0005] After research and analysis, it was found that there are two main locations where refrigerant leakage is prone to occur in air conditioners: the first is located inside the casing of the indoor unit, which is the connection position between the indoor heat exchanger and the refrigerant inlet pipe, refrigerant outlet pipe, and the U-shaped pipe position of the refrigerant inlet pipe and refrigerant outlet pipe; the second is located outside the casing of the indoor unit, which is the connection position between the pipe joint and the connecting pipes of the indoor and outdoor units.

[0006] Therefore, the embodiment of the present application sets a first refrigerant detection area in the casing, and sets a second refrigerant detection area outside the casing. The first refrigerant detection area corresponds to the position in the casing where refrigerant leakage is likely to occur, and the second refrigerant detection area corresponds to the second position where refrigerant leakage is likely to occur. In addition, the leaked refrigerant is usually gaseous. Since the first refrigerant detection area is connected to the second refrigerant detection area, the refrigerant in the first refrigerant detection area can flow to the second refrigerant detection area, and the refrigerant in the second refrigerant detection area can also flow to the first refrigerant detection area. Therefore, at least one of the first refrigerant detection area and the second refrigerant detection area is provided with a refrigerant detection sensor, so that the positions inside and outside the casing where refrigerant leakage is likely to occur can be detected, and the refrigerants in the two refrigerant detection areas can be collected to increase the refrigerant concentration, which is conducive to improving the detection sensitivity of the refrigerant detection sensor, and then it is conducive to the refrigerant detection sensor to quickly detect the refrigerant leakage and issue an alarm in time, and only one refrigerant detection sensor can be used to achieve the effect of quickly detecting the two refrigerant detection areas inside and outside to save costs.

[0007] In an exemplary embodiment, the air conditioner further includes: a sealing box, which is sleeved on the piping joint and the indoor-outdoor unit connecting pipe to seal the connecting portion between the piping joint and the indoor-outdoor unit connecting pipe in the sealing box, and the internal space of the sealing box forms the second refrigerant detection area; the sealing box is connected to the first refrigerant detection area through a refrigerant guide pipe, and the refrigerant guide pipe is passed through the casing.

[0008] In an exemplary embodiment, the sealing box is provided with a first through hole, a second through hole and a third through hole, the two pipe joints are respectively passed through the first through hole and the second through hole, the refrigerant guide pipe is passed through the third through hole, and the first through hole and the second through hole are located at one end of the sealing box close to the casing; the sealing box is provided with a fourth through hole and a fifth through hole at one end away from the casing, and the two internal and external machine connecting pipes are respectively passed through the fourth through hole and the fifth through hole.

[0009] In an exemplary embodiment, the third through hole is also located at one end of the sealing box close to the housing and between the first through hole and the second through hole.

[0010] In an exemplary embodiment, the sealed box includes a box body and a box cover, and the box body is connected to the box cover to enclose the second refrigerant detection area.

[0011] In an exemplary embodiment, one end of the box body is rotatably connected to one end of the box cover, and the other end of the box body is detachably connected to the other end of the box cover.

[0012] In an exemplary embodiment, one end of the box body and one end of the box cover are a rotatable integrated structure, and the other end of the box body and the other end of the box cover are detachably connected via a buckle and a first fastener.

[0013] In an exemplary embodiment, the rotation axis of the box cover is parallel to the central axis of the pipe joint, and one end of the box cover and the other end of the box cover are arranged opposite to each other along the arrangement direction of the two pipe joints; the middle part of the box cover and the middle part of the box body are fixedly connected by a second fastener, and the second fastener is located between the two pipe joints, and locks the box cover and the box body along a direction perpendicular to the rotation axis of the box cover.

[0014] In an exemplary embodiment, the housing includes a pipe pressing plate, the refrigerant flow guide pipe and the pipe joint are inserted through the pipe pressing plate, and the inner diameter of the refrigerant flow guide pipe is greater than or equal to 8 mm.

[0015] In an exemplary embodiment, the indoor heat exchanger is arranged along the circumferential direction of the casing, and the two ends of the indoor heat exchanger along the circumferential direction of the casing are spaced apart, and at least a portion of the first refrigerant detection area is located between the two ends of the indoor heat exchanger along the circumferential direction of the casing.

[0016] In an exemplary embodiment, the casing includes: a chassis and a panel arranged opposite to each other, and a side panel connected to the chassis and the panel; the indoor heat exchanger is fixedly connected to the chassis through a heat exchanger connecting plate, and the refrigerant detection sensor is arranged in the first refrigerant detection area and fixed to the heat exchanger connecting plate; the air conditioner also includes: a water pump arranged in the first refrigerant detection area, the water pump is fixed to the heat exchanger connecting plate, and the water pump and the refrigerant detection sensor are arranged along the height direction of the side panel.

[0017] In an exemplary embodiment, the heat exchanger connecting plate includes: a first end plate, fixedly connected to the chassis; a side plate, one end of the side plate in the height direction is connected to the first end plate, and the refrigerant detector is fixed to the plate surface of the side plate close to the second refrigerant detection area; a second end plate, connected to the other end of the side plate in the height direction and arranged opposite to the first end plate, and the water pump is fixed to the plate surface of the second end plate away from the first end plate; two flanges, respectively connected to the two ends of the side plate in the width direction, and respectively connected to the two ends of the indoor heat exchanger along the circumferential direction of the casing.

[0018] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0020] Figure 1 A schematic diagram of the exploded structure of an indoor unit of an air conditioner provided in some embodiments of the present application;

[0021] Figure 2 A schematic diagram of a partial bottom view of the structure of an indoor unit provided in some embodiments of the present application;

[0022] Figure 3 for Figure 2 The structure shown is a schematic diagram of the assembly structure of the internal and external machine pipes and the sealing box;

[0023] Figure 4 for Figure 3 The schematic diagram of the structure shown is without the sealing box;

[0024] Figure 5 for Figure 2 A partial three-dimensional structural diagram of the indoor unit is shown;

[0025] Figure 6 A schematic diagram of the structure of a sealed box in an open state provided by some embodiments of the present application;

[0026] Figure 7 for Figure 6 Schematic diagram of the structure of the sealing box in the closed state.

[0027] The reference numerals are as follows:

[0028] 1 housing, 11 side panel, 111 pipe pressing plate, 12 panel, 13 chassis, 14 heat exchanger connecting plate, 141 first end plate, 142 second end plate, 143 side plate, 151 first refrigerant detection area, 152 second refrigerant detection area;

[0029] 2Indoor heat exchanger;

[0030] 31 refrigerant input pipe, 32 refrigerant output pipe, 33 pipe joint, 34 internal and external unit connecting pipe, 35 refrigerant flow guide pipe;

[0031] 4Refrigerant detection sensor;

[0032] 5 sealing box, 51 box cover, 511 first connecting hole, 512 lug, 513 buckle, 514 third connecting hole, 515 connecting boss, 516 reinforcing rib, 52 box body, 521 second connecting hole, 522 slot, 523 extension plate, 524 connecting column, 531 first through hole, 532 second through hole, 533 third through hole, 534 fourth through hole, 535 fifth through hole;

[0033] 61 water tray, 62 water pump, 63 drainage pipe;

[0034] 71 motor, 72 wind wheel, 73 guide ring;

[0035] 8Electrical control box. DETAILED DESCRIPTION

[0036] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0037] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme defined by the claims. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0038] The present application embodiment provides an air conditioner, which may be, but is not limited to, a ceiling unit, such as Figure 1 shown.

[0039] Specifically, Figures 1 to 3 As shown, the air conditioner includes: a casing 1, an indoor heat exchanger 2, a refrigerant input pipe 31, a refrigerant output pipe 32, a refrigerant detection sensor 4 and an internal and external unit connecting pipe 34.

[0040] like Figure 2As shown, a first refrigerant detection area 151 is provided inside the housing 1, and a second refrigerant detection area 152 is provided outside the housing 1. The first refrigerant detection area 151 is connected to the second refrigerant detection area 152.

[0041] The indoor heat exchanger 2 is disposed in the casing 1 , and an input port and an output port of the indoor heat exchanger 2 are located in the first refrigerant detection area 151 .

[0042] like Figure 1 , Figure 2 and Figure 5 As shown in FIG. 1 , the refrigerant input pipe 31 and the refrigerant output pipe 32 are respectively connected to the input port and the output port of the indoor heat exchanger 2, and the ends of the refrigerant input pipe 31 and the refrigerant output pipe 32 away from the indoor heat exchanger 2 are both provided with a pipe joint 33. The pipe joint 33 is passed through the casing 1 and is configured to be connected to the internal and external machine connecting pipe 34 located outside the casing 1, as shown in FIG. Figure 3 and Figure 4 The connection portion between the pipe joint 33 and the internal and external unit connecting pipe 34 is located in the second refrigerant detection area 152 .

[0043] The first refrigerant detection area 151 and / or the second refrigerant detection area 152 is provided with a refrigerant detection sensor 4, such as Figure 1 and Figure 5 shown.

[0044] The housing 1 is the housing 1 of the indoor unit. The air conditioner may also include an outdoor unit (not shown). The indoor unit and the outdoor unit are connected by two indoor and outdoor unit connecting pipes 34 to ensure that the refrigerant can circulate between the indoor unit and the outdoor unit to form a refrigerant cycle.

[0045] Through research and analysis, it was found that Figure 2 As shown, there are two main locations where refrigerant leakage is prone to occur in the air conditioner: the first location is located inside the casing 1 of the indoor unit, which is the connection position between the indoor heat exchanger 2 and the refrigerant input pipe 31 and the refrigerant output pipe 32, and the U-shaped pipe position of the refrigerant input pipe 31 and the refrigerant output pipe 32; the second location is located outside the casing 1 of the indoor unit, which is the connection position between the pipe joint 33 and the internal and external unit connecting pipe 34.

[0046] Therefore, in the embodiment of the present application, a first refrigerant detection area 151 is set inside the housing 1, and a second refrigerant detection area 152 is set outside the housing 1. Figure 2As shown, the first refrigerant detection area 151 corresponds to the position in the housing 1 where refrigerant leakage is likely to occur, and the second refrigerant detection area 152 corresponds to the second position where refrigerant leakage is likely to occur. In addition, the leaked refrigerant is usually in a gaseous state. Since the first refrigerant detection area 151 is connected to the second refrigerant detection area 152, the refrigerant in the first refrigerant detection area 151 can flow to the second refrigerant detection area 152, and the refrigerant in the second refrigerant detection area 152 can also flow to the first refrigerant detection area 151. Therefore, at least one of the first refrigerant detection area 151 and the second refrigerant detection area 152 is provided with a refrigerant detection sensor 4, so that the positions inside and outside the housing 1 where refrigerant leakage is likely to occur can be detected, and the refrigerants in the two refrigerant detection areas can be collected to increase the refrigerant concentration, which is conducive to improving the detection sensitivity of the refrigerant detection sensor 4, and then it is conducive to the refrigerant detection sensor 4 to quickly detect the refrigerant leakage and issue an alarm in time, and only one refrigerant detection sensor 4 can be used to achieve the effect of quickly detecting the two refrigerant detection areas inside and outside to save costs.

[0047] The refrigerant detection sensor 4 may be equipped with an alarm device, or the air conditioner may be additionally provided with an alarm device, so that when the refrigerant detection sensor 4 detects a refrigerant leak, the alarm device may promptly issue a detection alarm.

[0048] In some embodiments, only the first refrigerant detection area 151 is provided with a refrigerant detection sensor 4, and the refrigerant detection sensor 4 is located in the housing 1, so as to quickly detect whether there is a refrigerant leak in the housing 1, so as to avoid the accumulation of refrigerant in the housing 1, which may cause danger, or the leaked refrigerant may be discharged into the room, causing adverse effects on the user. According to the test, when the air conditioner has a refrigerant leak, the refrigerant detection sensor 4 can detect the refrigerant in thirty or forty seconds and then issue an alarm.

[0049] Of course, the second refrigerant detection area 152 may also be provided with a refrigerant detection sensor 4 .

[0050] In some exemplary embodiments, Figure 3 As shown, the air conditioner further includes a sealing box 5. The sealing box 5 is sleeved on the pipe joint 33 and the internal and external unit connecting pipe 34 to seal the connection portion between the pipe joint 33 and the internal and external unit connecting pipe 34 in the sealing box 5. The internal space of the sealing box 5 forms a second refrigerant detection area 152. The sealing box 5 is connected to the first refrigerant detection area 151 through the refrigerant guide pipe 35, and the refrigerant guide pipe 35 is penetrated in the casing 1.

[0051] In this way, the refrigerant leaking from the connection between the pipe joint 33 and the internal and external unit connecting pipe 34 can be sealed in the sealing box 5, preventing the leaked refrigerant from spreading outward over a large area, which is beneficial to quickly increase the concentration of the leaked refrigerant in the second refrigerant detection area 152, thereby helping to further improve the detection sensitivity of the refrigerant detection sensor 4.

[0052] In some exemplary embodiments, Figure 6 As shown, the sealing box 5 is provided with a first through hole 531, a second through hole 532 and a third through hole 533. The two pipe joints 33 are respectively provided in the first through hole 531 and the second through hole 532. The refrigerant guide pipe 35 is provided in the third through hole 533. Figure 3 The first through hole 531 and the second through hole 532 are located at one end of the sealing box 5 close to the housing 1. The end of the sealing box 5 away from the housing 1 is provided with a fourth through hole 534 and a fifth through hole 535. The two internal and external machine connecting pipes 34 are respectively provided through the fourth through hole 534 and the fifth through hole 535.

[0053] This ensures that the connection parts of the two pipe joints 33 and the two internal and external machine connecting pipes 34 are both located in the sealing box 5, and the detection requirements can be met by using one sealing box 5 and one refrigerant guide pipe 35, which is conducive to reducing the number of parts, simplifying the structure, and improving assembly efficiency.

[0054] Among them, Figure 6 and Figure 7 As shown, the first through hole 531, the second through hole 532, the third through hole 533, the fourth through hole 534, and the fifth through hole 535 can extend outward to form a tubular structure, which is beneficial to improving the matching reliability between the sealing box 5 and the piping joint 33, the internal and external machine connecting pipe 34 and the refrigerant guide pipe 35 and is beneficial to preventing refrigerant leakage.

[0055] Of course, multiple sealing boxes 5 can also be provided, for example, two sealing boxes 5 respectively seal the connection parts between the two pipe joints 33 and the two internal and external machine connecting pipes 34, and each sealing box 5 is connected to the first refrigerant detection area 151 through a refrigerant guide tube 35. Alternatively, the two sealing boxes 5 are connected through a refrigerant guide tube 35, and one of the sealing boxes 5 is connected to the first refrigerant detection area 151 through the other refrigerant guide tube 35.

[0056] In some exemplary embodiments, the third through hole 533 is also located at one end of the sealing box 5 close to the housing 1 and between the first through hole 531 and the second through hole 532. Figure 6 shown.

[0057] This helps shorten the length of the refrigerant guide tube 35 (which can shorten the refrigerant flow path), and the refrigerant guide tube 35 can be a straight tube (which can reduce the refrigerant flow resistance), which in turn helps the refrigerant in the second refrigerant detection area 152 to quickly enter the first refrigerant detection area 151, which helps to further improve the refrigerant detection sensitivity of the refrigerant detection sensor 4.

[0058] Furthermore, this allows the refrigerant guide pipe 35 to be located between the two pipe joints 33 and very close to the two pipe joints 33. Therefore, when refrigerant leakage occurs at the connection between any pipe joint 33 and the corresponding internal and external unit connecting pipe 34, the refrigerant can quickly reach the refrigerant guide pipe 35 and then quickly enter another refrigerant detection area, which is also beneficial to further improve the refrigerant detection sensitivity of the refrigerant detection sensor 4.

[0059] In addition, the structure of the sealing box 5 can be relatively regular, which is convenient for processing and forming.

[0060] Of course, the third through hole 533 may also be arranged at other positions of the sealing box 5 , such as on the bottom wall of the sealing box 5 .

[0061] In some exemplary embodiments, the sealed box 5 includes a box body 52 and a box cover 51. Figure 6 and Figure 7 The box body 52 is connected to the box cover 51 and encloses a second refrigerant detection area 152 .

[0062] This can simplify the structures of the box body 52 and the box cover 51, making it easier to process and shape them; it is also easier to first connect the pipe joint 33 and the internal and external unit connecting pipe 34, and then open the sealing box 5 and install it on the pipe joint 33, the internal and external unit connecting pipe 34 and the refrigerant guide pipe 35, so as to reduce the difficulty of connecting the pipe joint 33 and the internal and external unit connecting pipe 34, improve the connection reliability of the pipe joint 33 and the internal and external unit connecting pipe 34, and also help to reduce the difficulty of installing the sealing box 5.

[0063] In some exemplary embodiments, the box body 52 and the box cover 51 enclose a first through hole 531, a second through hole 532, a third through hole 533, a fourth through hole 534 and a fifth through hole 535. Figure 6 and Figure 7 shown.

[0064] In this way, the box body 52 and the box cover 51 can be processed with five semicircular grooves, such as Figure 6 Ten semicircular grooves are connected to form five through holes. Figure 7 This can save the process of passing the pipe joint 33, the internal and external machine connecting pipe 34 and the refrigerant guide pipe 35 through the corresponding through holes of the sealing box 5, which is conducive to reducing the difficulty of installing the sealing box 5.

[0065] In some exemplary embodiments, one end of the box body 52 is rotatably connected to one end of the box cover 51, and the other end of the box body 52 is detachably connected to the other end of the box cover 51. Figure 6 and Figure 7 shown.

[0066] During assembly, the box cover 51 can be opened, and then the box body 52 can be aligned with the pipe joint 33, the internal and external unit connecting pipe 34 and the refrigerant guide pipe 35, and then the box cover 51 can be closed, and then the box cover 51 and the box body 52 can be fixedly connected. Since the box cover 51 will not be completely disassembled, it is only necessary to ensure that the other end of the box cover 51 is aligned with the other end of the box body 52, which is conducive to simplifying the installation process of the sealing box 5.

[0067] Of course, the connection method between the box cover 51 and the box body 52 is not limited thereto. For example, both ends of the box cover 51 can be detachably connected to the box body 52 .

[0068] In some exemplary embodiments, one end of the box body 52 and one end of the box cover 51 are rotatable integral structures, such as Figure 6 The other end of the box body 52 is detachably connected to the other end of the box cover 51 through a buckle 513 and a first fastener.

[0069] The box cover 51 can be covered on the box body 52 by rotating 180° along one end thereof, and can be opened by rotating 180° in the opposite direction.

[0070] like Figure 6 and Figure 7 As shown, the other end of the box cover 51 may be provided with a first connection hole 511, and the other end of the box body 52 may be provided with a second connection hole 521. The first fastener (such as a screw) may pass through the first connection hole 511 and be threadedly connected with the second connection hole 521 to achieve fixed connection between the box cover 51 and the box body 52. ​​One of the box cover 51 and the box body 52 is provided with a buckle 513, and the other is provided with a slot 522. The buckle 513 is engaged with the slot 522, so that the box cover 51 and the box body 52 can be fixed by the buckle 513 and the first connection hole 511 of the box cover 51 is aligned with the second connection hole 521 of the box body 52, so as to facilitate the installation of the first fastener. The number of the first fasteners and the buckle 513 is not limited and can be reasonably set as needed.

[0071] In one embodiment, Figure 6 and Figure 7 As shown, the other end of the box cover 51 is provided with two buckles 513 and a lug 512, the two buckles 513 are symmetrically arranged on both sides of the lug 512, and the first connection hole 511 is arranged on the lug 512. The other end of the box body 52 is provided with an extension plate 523, the extension plate 523 is provided with two slots 522 and a second connection hole 521, and the two slots 522 are symmetrically arranged on both sides of the second connection hole 521. Two reinforcing ribs 516 can also be arranged at both ends of the lug 512, and the first connection hole 511 is located between the two reinforcing ribs 516.

[0072] During the assembly process, the two buckles 513 are first inserted into the two slots 522, so that the lugs 512 fit the extension plate 523 and the first connection hole 511 is aligned with the second connection hole 521, and then the first fastener is screwed in. This can reduce the number of first fasteners, which is conducive to improving the installation efficiency of the sealing box 5.

[0073] The other end of the box cover 51 and the other end of the box body 52 can also be arranged to be matched with each other. Figure 6 As shown, the sealing performance of the sealing box 5 is further improved.

[0074] Of course, the other end of the box cover 51 and the other end of the box body 52 can also be detachably connected in other ways, such as only connected by fasteners or only connected by buckles 513.

[0075] In some exemplary embodiments, Figure 3 and Figure 6 As shown, the rotation axis of the box cover 51 is parallel to the central axis of the pipe joint 33 , and one end of the box cover 51 and the other end of the box cover 51 are arranged opposite to each other along the arrangement direction of the two pipe joints 33 .

[0076] In this way, the box body 52 can be directly placed under the two pipe joints 33 and then the box cover 51 can be closed. There is no need to carefully pass the pipe joints 33, the internal and external unit connecting pipes 34, and the refrigerant guide pipe 35 through the sealing box 5, which can reduce the difficulty of installation and improve assembly efficiency.

[0077] In some exemplary embodiments, the middle of the box cover 51 and the middle of the box body 52 are fixedly connected by a second fastener, and the second fastener is located between the two pipe joints 33 and locks the box cover 51 and the box body 52 in a direction perpendicular to the rotation axis of the box cover 51. Figure 6 and Figure 7 shown.

[0078] The second fastener can lock and reinforce the middle part of the sealing box 5 to prevent the sealing box 5 from leaking refrigerant due to local gaps caused by the refrigerant pressure or the like.

[0079] In one embodiment, Figure 6 and Figure 7 As shown, a third connection hole 514 is provided in the middle of the box body 52, and a connection column 524 is provided on the inner wall surface of the box cover 51, and a second fastener (such as a screw) passes through the third connection hole 514 and is fixedly connected to the connection column 524. A hollow connection boss 515 is provided on the inner wall surface of the box cover 51, and the connection boss 515 abuts against the connection column 524, so that the sealing box 5 can be prevented from being deformed by excessive extrusion. The third connection hole 514 can be a countersunk hole, so that the head of the second fastener can be hidden in the box cover 51 to avoid interference with other structures.

[0080] In some exemplary embodiments, sealing sponges (not shown in the figure) are provided between the sealing box 5 and the refrigerant guide pipe 35, between the sealing box 5 and the pipe joint 33, and between the sealing box 5 and the internal and external machine connecting pipe 34. The sealing sponges can further improve the sealing reliability of the sealing box 5 and help alleviate pipeline vibration noise.

[0081] In some exemplary embodiments, the sealing box 5 may be a plastic part, such as a PP (polypropylene) part, which is easy to process and has high processing precision and low cost.

[0082] In some exemplary embodiments, the housing 1 includes a pipe clamp 111, such as Figure 3 and Figure 4 As shown, the refrigerant flow guide pipe 35 and the pipe joint 33 are inserted into the pipe holding plate 111 .

[0083] The inner diameter of the refrigerant flow guiding tube 35 is greater than or equal to 8 mm, which is conducive to ensuring the flow guiding effect of the refrigerant flow guiding tube 35.

[0084] Of course, the inner diameter of the refrigerant flow guide tube 35 is not limited to the above range and can be adjusted as needed.

[0085] In some exemplary embodiments, Figure 1 and Figure 5 As shown, the indoor heat exchanger 2 is arranged along the circumferential direction of the casing 1. The indoor heat exchanger 2 is arranged at intervals at both ends along the circumferential direction of the casing 1, and at least a part of the first refrigerant detection area 151 is located between the two ends of the indoor heat exchanger 2 along the circumferential direction of the casing 1. The casing 1 can be roughly in the shape of a quadrangular prism, such as Figure 1 As shown, the circumferential direction of the housing 1 is the circumferential direction of the side panel 11 of the housing 1 .

[0086] The input port and output port of the indoor heat exchanger 2 are usually located at one end of the indoor heat exchanger 2 along the circumferential direction of the casing 1, and the refrigerant input pipe 31 and the refrigerant output end are usually arranged in this area, so at least a part of the first refrigerant detection area 151 is located between the two ends of the indoor heat exchanger 2 along the circumferential direction of the casing 1.

[0087] There may be a certain gap between the indoor heat exchanger 2 and the side panel 11 of the casing 1, and a portion of the first refrigerant detection area 151 may also be located in the gap between the two ends of the indoor heat exchanger 2 along the circumferential direction of the casing 1 and the pipe pressing plate 111. The pipe pressing plate 111 may be a part of the side panel 11 of the casing 1.

[0088] In some exemplary embodiments, Figure 1As shown, the housing 1 includes: a chassis 13 and a panel 12 arranged opposite to each other, and a side panel 11 connected to the chassis 13 and the panel 12. The indoor heat exchanger 2 is fixedly connected to the chassis 13 through a heat exchanger connecting plate 14, and the refrigerant detection sensor 4 is arranged in the first refrigerant detection area 151 and fixed to the heat exchanger connecting plate 14. Figure 1 shown.

[0089] In this way, the heat exchanger connecting plate 14 can be reasonably utilized to fix the refrigerant heat exchanger, and the heat exchanger connecting plate 14 can be easily processed into a desired shape according to needs.

[0090] Of course, the refrigerant detection sensor 4 can also be fixed on other components, such as fixed on the chassis 13 or fixed on the side panel 11, as long as it can detect the refrigerant.

[0091] In some exemplary embodiments, the air conditioner further includes: a water pump 62 disposed in the first refrigerant detection area 151, such as Figure 1 and Figure 5 The water pump 62 is fixed to the heat exchanger connecting plate 14 , and the water pump 62 and the refrigerant detection sensor 4 are arranged along the height direction of the side panel 11 .

[0092] In some exemplary embodiments, Figure 5 As shown, the heat exchanger connecting plate 14 includes: a first end plate 141, a side plate 143, a second end plate 142 and two flanges (not shown in the figure).

[0093] Among them, the first end plate 141 is fixedly connected to the chassis 13. One end of the side plate 143 in the height direction is connected to the first end plate 141, and the refrigerant detector is fixed to the plate surface of the side plate 143 close to the second refrigerant detection area 152. The second end plate 142 is connected to the other end of the side plate 143 in the height direction, and is arranged opposite to the first end plate 141. The water pump 62 is fixed to the plate surface of the second end plate 142 away from the first end plate 141. The two flanges are respectively connected to the two ends of the side plate 143 in the width direction, and are respectively connected to the two ends of the indoor heat exchanger 2 along the circumferential direction of the casing 1.

[0094] This is equivalent to dividing the heat exchanger connecting plate 14 into two layers, one layer is installed with the refrigerant detection sensor 4, and the other layer is installed with the water pump 62, which is conducive to saving space.

[0095] Of course, the heat exchanger connecting plate 14 is not limited to the above shape, for example, it can also be a straight up and down shape.

[0096] In some exemplary embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the air conditioner further includes a water receiving pan 61, which is disposed between the indoor heat exchanger 2 and the panel 12 and is disposed along the circumference of the indoor heat exchanger 2. A water pump 62 is connected to the water receiving pan 61. The water pump 62 is connected to a drain pipe 63, as shown in FIG. Figure 1 and Figure 4 As shown, the drain pipe 63 passes through the side panel 11 and extends to the outside of the casing 1 to drain the condensed water in the water receiving tray 61.

[0097] The panel 12 may be provided with an air inlet, and the side panels may be provided with an air outlet. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the housing 1 may further be provided with components such as a wind wheel 72, a motor 71, a water receiving tray 61, an electric control box 8, and a guide ring 73. The wind wheel 72 may be a centrifugal wind wheel 72, and the motor 71, the centrifugal wind wheel 72 and the guide ring 73 may be located in the space surrounded by the indoor heat exchanger 2. The electric control box 8 may be fixed on the guide ring 73.

[0098] During the installation process before leaving the factory, the chassis 13 can be placed at the bottom and the panel 12 at the top. During the installation process after leaving the factory, the chassis 13 is placed at the top and the panel 12 is placed at the bottom, with air outlet directed downward. The refrigerant detection sensor 4 is located at the top of the first refrigerant detection area 151, the water receiving tray 61 is located below the indoor heat exchanger 2, and the outlet of the drain pipe 63 is located at the upper side of the two pipe joints 33, as shown in FIG. Figures 1 to 5 As shown, the water receiving pan 61 can collect the condensed water dripping from the indoor heat exchanger 2, and the water pump 62 can pump the condensed water in the water receiving pan 61 upward to the drain pipe 63 for discharge. Figures 1 to 5 The up and down direction in the diagram is based on the direction in which the product is assembled after leaving the factory.

[0099] In summary, the air conditioner provided in the embodiment of the present application can quickly detect refrigerant leakage inside and / or outside the casing of the indoor unit, so that the air conditioner can promptly issue a detection alarm to reduce the flammable and explosive risks caused by refrigerant leakage.

[0100] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred structure has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0101] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0102] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted for facilitating understanding of the present invention and are not intended to limit the present invention. It should be noted that the above embodiments or embodiments are merely exemplary and not restrictive. Therefore, the present invention is not limited to the contents specifically shown and described herein. Various modifications, substitutions or omissions may be made to the forms and details of implementation without departing from the scope of the present invention.

Claims

1. An air conditioner, characterized in that: include: A casing, wherein a first refrigerant detection area is provided inside the casing, and a second refrigerant detection area is provided outside the casing, and the first refrigerant detection area is connected to the second refrigerant detection area; An indoor heat exchanger is disposed in the casing, and an input port and an output port of the indoor heat exchanger are located in the first refrigerant detection area; The refrigerant input pipe and the refrigerant output pipe are respectively connected to the input port and the output port of the indoor heat exchanger, and are provided with a pipe joint at one end away from the indoor heat exchanger; the pipe joint is passed through the casing and is arranged to be connected to the indoor and outdoor machine connecting pipe located outside the casing, and the connection part between the pipe joint and the indoor and outdoor machine connecting pipe is located in the second refrigerant detection area; A refrigerant detection sensor is provided in the first refrigerant detection area and / or the second refrigerant detection area.

2. The air conditioner according to claim 1, characterized in that: Also includes: A sealing box is sleeved on the piping joint and the internal and external unit connecting pipe to seal the connection portion between the piping joint and the internal and external unit connecting pipe in the sealing box, and the internal space of the sealing box forms the second refrigerant detection area; the sealing box is connected to the first refrigerant detection area through a refrigerant guide pipe, and the refrigerant guide pipe is passed through the casing.

3. The air conditioner according to claim 2, characterized in that: The sealing box is provided with a first through hole, a second through hole and a third through hole, the two pipe joints are respectively provided in the first through hole and the second through hole, the refrigerant guide pipe is provided in the third through hole, and the first through hole and the second through hole are located at one end of the sealing box close to the housing; A fourth through hole and a fifth through hole are provided at one end of the sealing box away from the housing, and the two internal and external machine connecting pipes are respectively passed through the fourth through hole and the fifth through hole.

4. The air conditioner according to claim 3, characterized in that: The third through hole is also located at one end of the sealing box close to the housing and between the first through hole and the second through hole.

5. The air conditioner according to any one of claims 2 to 4, characterized in that: The sealed box includes a box body and a box cover, and the box body is connected to the box cover to enclose the second refrigerant detection area.

6. The air conditioner according to claim 5, characterized in that: One end of the box body is rotatably connected to one end of the box cover, and the other end of the box body is detachably connected to the other end of the box cover.

7. The air conditioner according to claim 6, characterized in that: One end of the box body and one end of the box cover are rotatable integral structures, and the other end of the box body and the other end of the box cover are detachably connected through a buckle and a first fastener.

8. The air conditioner according to claim 6, characterized in that: The rotation axis of the box cover is parallel to the central axis of the pipe joint, and one end of the box cover and the other end of the box cover are arranged opposite to each other along the arrangement direction of the two pipe joints; The middle part of the box cover is fixedly connected to the middle part of the box body by a second fastener, and the second fastener is located between the two pipe joints and locks the box cover and the box body in a direction perpendicular to the rotation axis of the box cover.

9. The air conditioner according to any one of claims 2 to 4, characterized in that: The housing includes a pipe pressing plate, the refrigerant flow guide pipe and the pipe joint are passed through the pipe pressing plate, and the inner diameter of the refrigerant flow guide pipe is greater than or equal to 8 mm.

10. The air conditioner according to any one of claims 1 to 4, characterized in that: The indoor heat exchanger is arranged along the circumferential direction of the casing, and the two ends of the indoor heat exchanger along the circumferential direction of the casing are spaced apart, and at least a part of the first refrigerant detection area is located between the two ends of the indoor heat exchanger along the circumferential direction of the casing.

11. The air conditioner according to any one of claims 1 to 4, characterized in that: The housing comprises: a chassis and a panel arranged opposite to each other, and a side panel connected to the chassis and the panel; The indoor heat exchanger is fixedly connected to the chassis via a heat exchanger connecting plate, and the refrigerant detection sensor is arranged in the first refrigerant detection area and fixed to the heat exchanger connecting plate; The air conditioner further includes: a water pump disposed in the first refrigerant detection area, the water pump is fixed to the heat exchanger connecting plate, and the water pump and the refrigerant detection sensor are arranged along the height direction of the side panel.

12. The air conditioner according to claim 11, characterized in that: The heat exchanger connecting plate comprises: A first end plate, fixedly connected to the chassis; A side plate, one end of which in the height direction is connected to the first end plate, and the refrigerant detector is fixed to a plate surface of the side plate close to the second refrigerant detection area; A second end plate connected to the other end of the side plate in the height direction and arranged opposite to the first end plate, the water pump being fixed to a plate surface of the second end plate away from the first end plate; The two flanges are respectively connected to the two ends of the side plate in the width direction, and are respectively connected to the two ends of the indoor heat exchanger in the circumferential direction of the casing.

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