Air conditioner indoor unit and seat type air conditioner

Abstract

The invention discloses an air conditioner indoor unit and a seat type air conditioner. The air conditioner indoor unit comprises a machine shell, an indoor heat exchanger and a refrigerant detection sensor. The machine shell comprises a base and a face frame, the face frame covers the base, the face frame and the base define an installation space, and the installation space comprises a first space, a second space and a third space which are arranged side by side in the width direction of the machine shell and communicate with one another; the indoor heat exchanger is arranged in the second space, and the refrigerant detection sensor is arranged in the third space; a piping space is formed in the side, away from the face frame, of the base and allows an indoor and outdoor unit connecting pipe to penetrate through so that the indoor and outdoor unit connecting pipe can stretch out of any end of the machine shell in the width direction. The base is further provided with a refrigerant flow guide hole communicated with the piping space. And the refrigerant flow guide hole is matched with the piping space, so that the refrigerant leaked from the first space is guided into the third space through the piping space and the refrigerant flow guide hole. According to the scheme, refrigerant leakage can be detected in time; and two-position detection can be realized through one refrigerant detection sensor, so that the cost is saved.

Description

Technical Field

[0001] This article relates to but is not limited to air conditioning technology, in particular to an air conditioning indoor unit and a floor-standing air conditioner. Background Art

[0002] At present, floor-standing air conditioners do not have matching refrigerant sensors. When the refrigerant leaks for a period of time, there is a problem of high concentration of 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-conditioning indoor unit and a floor-standing air conditioner, which can detect refrigerant leakage in a timely manner, thereby reducing the risk of flammability and explosion caused by refrigerant leakage.

[0004] To this end, the present application provides an air-conditioning indoor unit for a floor-type air conditioner, the air-conditioning indoor unit comprising: a casing, an indoor heat exchanger and a refrigerant detection sensor; the casing comprises a base and a face frame, the face frame cover is arranged on the base and encloses an installation space with the base, the installation space comprises a first space, a second space and a third space which are arranged side by side and interconnected along the width direction of the casing; the indoor heat exchanger is arranged in the second space, and the refrigerant detection sensor is arranged in the third space; a piping space is recessed on a side of the base away from the face frame, the piping space is arranged for the internal and external machine connecting pipes to pass through, so that the internal and external machine connecting pipes can extend from any end in the width direction of the casing; the base is also provided with a refrigerant guide hole connected to the piping space; the refrigerant guide hole is arranged to cooperate with the piping space to guide the refrigerant leaked in the first space to the third space through the piping space and the refrigerant guide hole.

[0005] The indoor heat exchanger is usually provided with a plurality of heat exchange channels, which can be arranged in a row. Several small U-shaped tubes are welded on both ends of the indoor heat exchanger to connect the heat exchange channels in the indoor heat exchanger. Refrigerant leakage is likely to occur at the welding position, so refrigerant leakage is likely to occur on both ends of the indoor heat exchanger. The third space is arranged adjacent to the second space, so the refrigerant detection sensor in the third space can timely detect the refrigerant leakage at the end of the indoor heat exchanger close to the third space. However, the first space is far away from the third space, and is affected by the indoor heat exchanger and the air intake airflow in the second space (usually flowing along the thickness direction of the casing to flow through the indoor heat exchanger), resulting in the refrigerant leakage at the end of the indoor heat exchanger close to the first space being difficult to pass through the second space and be detected in time by the refrigerant detection sensor.

[0006] To this end, the base is also provided with a refrigerant guide hole, so that the first space and the third space can be connected through the refrigerant guide hole and the piping space. In this way, the refrigerant leaking from one end of the indoor heat exchanger close to the first space can enter the third space through the first space, the refrigerant guide hole and the piping space, and then be detected in time by the refrigerant detection sensor in the third space. The piping space is located outside the installation space and is not affected by the airflow in the casing, so that the refrigerant can flow quickly into the third space and be detected. In addition, since the piping space is closed by the wall to form a closed cavity, the refrigerant in the piping space will not directly diffuse into the outside air and can be detected in time.

[0007] Therefore, the air-conditioning indoor unit for a seated air conditioner provided in the embodiment of the present application can timely detect whether refrigerant leakage occurs at the locations on both sides of the indoor heat exchanger where refrigerant leakage is prone to occur, thereby reducing the risk of flammability and explosion caused by refrigerant leakage; and two detections can be achieved by setting up one refrigerant detection sensor, which has a simple structure and is conducive to cost saving.

[0008] In an exemplary embodiment, the base is provided with a pipe outlet connected to the piping space, the pipe outlet is located in the first space, the first space is provided with input and output pipes connected to the indoor heat exchanger, the input and output pipes are connected with piping joints; the piping joint is provided at the pipe outlet and is configured to be connected to the internal and external unit connecting pipes; the refrigerant diversion hole is provided on the wall surface between the third space and the piping space.

[0009] In an exemplary embodiment, the piping space is disposed at the bottom of the base, the pipeline outlet is disposed at the lower part of the first space, the refrigerant detection sensor is disposed at the bottom of the third space, and the refrigerant diversion hole is disposed at the bottom of the third space.

[0010] In an exemplary embodiment, the air-conditioning indoor unit further includes an electric control box, which is disposed in the third space and electrically connected to the refrigerant detection sensor.

[0011] In an exemplary embodiment, a limiting portion is provided in the first space, the refrigerant detection sensor is limited in the limiting portion, and is clamped and fixed between the base and the surface frame.

[0012] In an exemplary embodiment, the limiting portion includes a plurality of limiting ribs arranged on the base, the plurality of limiting ribs are arranged at circumferential intervals along the refrigerant detection sensor, and the circumferential side walls of the refrigerant detection sensor abut against the plurality of limiting ribs; the surface frame is provided with a lower air outlet, and the casing also includes a lower air outlet frame arranged at the lower air outlet, the lower air outlet frame is fixedly connected to the base and presses the refrigerant detection sensor to fix the refrigerant detection sensor in the first space.

[0013] In an exemplary embodiment, a support protrusion is provided at one end of the limiting rib close to the refrigerant detection sensor, and the wall surface of the refrigerant detection sensor facing away from the face frame abuts against the support protrusion.

[0014] In an exemplary embodiment, the base is further provided with a supporting rib, and the supporting rib abuts against a wall surface of the refrigerant detection sensor facing away from the surface frame.

[0015] In an exemplary embodiment, at least a portion of the limiting ribs are configured as U-shaped ribs, and an opening of the U-shaped ribs faces the refrigerant detection sensor.

[0016] In an exemplary embodiment, the lower air outlet frame is provided with a stop rib, and the stop rib is pressed against the wall surface of the refrigerant detection sensor close to the surface frame.

[0017] In an exemplary embodiment, there are multiple refrigerant diversion holes; the orthographic projections of the multiple refrigerant diversion holes on the base partially overlap with the orthographic projections of the refrigerant detection sensor on the base.

[0018] An embodiment of the present application also provides a floor-standing air conditioner, comprising an air-conditioning indoor unit according to any one of the above embodiments.

[0019] 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

[0020] 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.

[0021] Figure 1 A schematic diagram of a three-dimensional structure of an air-conditioning indoor unit from one perspective provided in some embodiments of the present application;

[0022] Figure 2 for Figure 1 A three-dimensional structural diagram of the air conditioner indoor unit from another perspective is shown;

[0023] Figure 3 for Figure 1 The three-dimensional structural diagram of the air conditioner indoor unit shown in another perspective;

[0024] Figure 4 for Figure 3 A rear structural diagram of an air conditioner indoor unit is shown;

[0025] Figure 5 for Figure 3 A partial main structural diagram of an air conditioner indoor unit is shown;

[0026] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 7 for Figure 3 Another partial front view structural diagram of the air conditioner indoor unit shown;

[0028] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the middle B part;

[0029] Fig. 9 for Figure 8 A three-dimensional schematic diagram of the structure shown;

[0030] Fig.10 for Fig. 9 The structure shown is a schematic diagram of the structure without the refrigerant detection sensor;

[0031] Fig.11 for Figure 3 A partial main structural diagram of an air conditioner indoor unit is shown;

[0032] Fig.12 for Fig.11 The cross-sectional structural diagram of the structure shown in CC direction;

[0033] Fig.13 for Fig.12 The enlarged structural diagram of the middle E part;

[0034] Fig.14 for Fig.11 The cross-sectional structure schematic diagram of the structure shown in DD direction;

[0035] Fig.15 for Fig.14 Schematic diagram of the enlarged structure of part F in the middle.

[0036] The reference numerals are as follows:

[0037] 1 housing, 11 base, 111 piping space, 112 refrigerant guide hole, 113 limiting rib, 1131 supporting protrusion, 114 supporting rib, 12 face frame, 121 lower air outlet, 122 upper air outlet, 123 air inlet, 131 first space, 1311 pipeline outlet, 132 second space, 133 third space, 14 upper air outlet frame, 15 lower air outlet frame, 151 stopping rib;

[0038] 2Indoor heat exchanger;

[0039] 3. Refrigerant detection sensor;

[0040] 4 input and output pipes, 41 pipe joints;

[0041] 5.Electrical control box. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

[0045] Floor-standing air conditioners now mainly use R410A refrigerant, but there is no matching refrigerant detection sensor. R410A refrigerant has a high GWP and is believed to deplete the ozone layer and cause harm to the environment. R454B refrigerant has a lower GWP and is an economical and efficient alternative to traditional refrigerants, but it is slightly flammable and requires a matching refrigerant detection sensor to detect leaks in time and eliminate the risk of combustion. However, the air conditioner evaporator (i.e., indoor heat exchanger) is large in size, and it is difficult for the refrigerant detection sensor to detect leaks in various locations.

[0046] like Figures 1 to 5 As shown, an embodiment of the present application provides an air conditioner indoor unit for a floor-standing air conditioner. The air conditioner indoor unit comprises: a housing 1, an indoor heat exchanger 2 and a refrigerant detection sensor 3.

[0047] like Figure 2 , Figure 3 and Figure 4 As shown, the housing 1 includes a base 11 and a face frame 12. The face frame 12 is covered on the base 11 and encloses an installation space with the base 11. Figure 7 As shown, the installation space includes a first space 131, a second space 132 and a third space 133 arranged side by side and interconnected along the width direction (i.e., the left-right direction) of the housing 1. Figure 5 and Figure 7 As shown, the indoor heat exchanger 2 is disposed in the second space 132, and the refrigerant detection sensor 3 is disposed in the third space 133. The base 11 may be an integrated structure or a split assembly structure.

[0048] A concave pipe space 111 is formed on one side of the base 11 away from the face frame 12. Figure 1 , Figure 2 , Figure 4 and Fig.14 As shown. The piping space 111 is configured to allow the indoor and outdoor unit connecting pipes to pass through, so that the indoor and outdoor unit connecting pipes can extend from any end in the width direction of the housing 1. Whether the indoor and outdoor unit connecting pipes extend from the left end or the right end needs to be determined according to the actual installation scenario of the user's home. The indoor unit of a floor-standing air conditioner is usually installed against a wall on the floor below the window, and the rear end of the piping space 111 can be opened, such as Figure 1 , Figure 2 and Figure 4 After installation, the rear opening of the pipe space 111 will be closed by the wall to form a closed cavity.

[0049] The base 11 is also provided with a refrigerant guide hole 112 connected to the pipe space 111. Figure 1 , Figure 4 , Figure 8 , Fig. 9 and Fig.10The refrigerant guide hole 112 is configured to cooperate with the pipe space 111 to guide the refrigerant leaking from the first space 131 to the third space 133 through the pipe space 111 and the refrigerant guide hole 112 .

[0050] The indoor heat exchanger 2 is usually provided with a plurality of heat exchange channels, which can be arranged in a row. A plurality of small U-shaped tubes are welded at both ends of the indoor heat exchanger 2, such as Figure 5 As shown, the heat exchange flow channel in the indoor heat exchanger 2 is connected, and refrigerant leakage is likely to occur at the welding position, so refrigerant leakage is likely to occur at the left and right ends of the indoor heat exchanger 2. The third space 133 is arranged adjacent to the second space 132, so the refrigerant detection sensor 3 in the third space 133 can timely detect the refrigerant leakage at one end of the indoor heat exchanger 2 close to the third space 133. However, the first space 131 is far away from the third space 133, and is affected by the indoor heat exchanger 2 and the air intake airflow in the second space 132 (usually flowing along the thickness direction of the casing 1 to flow through the indoor heat exchanger 2), resulting in the refrigerant leakage at one end of the indoor heat exchanger 2 close to the first space 131. It is difficult to pass through the second space 132 and be detected in time by the refrigerant detection sensor 3.

[0051] To this end, the base 11 is also provided with a refrigerant guide hole 112, such as Figure 1 , Figure 4 , Figure 8 , Fig. 9 and Fig.10 As shown, the first space 131 and the third space 133 can be connected through the refrigerant guide hole 112 and the piping space 111. In this way, the refrigerant leaking from one end of the indoor heat exchanger 2 close to the first space 131 can enter the third space 133 through the first space 131, the refrigerant guide hole 112 and the piping space 111, and then be detected in time by the refrigerant detection sensor 3 in the third space 133. The piping space 111 is located outside the installation space and is not affected by the airflow in the casing 1, so that the refrigerant can quickly flow into the third space 133 and be detected. In addition, since the piping space 111 is closed by the wall to form a closed cavity, the refrigerant in the piping space 111 will not directly diffuse into the outside air and can be detected in time.

[0052] Therefore, the air-conditioning indoor unit for a seated air conditioner provided in the embodiment of the present application can timely detect whether refrigerant leakage occurs at the positions on both sides of the indoor heat exchanger 2 where refrigerant leakage is prone to occur, thereby reducing the risk of flammability and explosion caused by refrigerant leakage; and two-location detection can be achieved by setting a refrigerant detection sensor 3, which has a simple structure and is conducive to cost saving.

[0053] In some exemplary embodiments, the base 11 is provided with a pipe outlet 1311 communicating with the pipe space 111, such as Figure 4The pipeline outlet 1311 is located in the first space 131. The first space 131 is provided with an input and output pipe 4 (i.e., a refrigerant input pipe and a refrigerant output pipe) connected to the indoor heat exchanger 2. Figure 5 The input and output pipes 4 are connected to the pipe joints 41, as shown in FIG. Figure 4 The pipe joint 41 is provided at the pipe outlet 1311 and is configured to be connected to the internal and external machine connection pipes. The refrigerant guide hole 112 is provided on the wall between the third space 133 and the pipe space 111, as shown in FIG. Figure 8 , Fig. 9 and Fig.10 shown.

[0054] The input and output pipes 4 are connected to the indoor heat exchanger 2 and are used to input and output refrigerant to the indoor heat exchanger 2. The input and output pipes 4 are connected to the indoor and outdoor unit connecting pipes through the pipe joints 41, and the indoor and outdoor unit connecting pipes are used to connect the indoor unit of the air conditioner and the outdoor unit of the air conditioner to realize the circulation of refrigerant. Since the pipe joints 41 are to be connected to the indoor and outdoor unit connecting pipes, and the indoor and outdoor unit connecting pipes are at least partially located in the pipe space 111 outside the installation space, the base 11 needs to be provided with a pipe outlet 1311 to ensure that the pipe joints 41 can be connected to the indoor and outdoor unit connecting pipes. In this way, the first space 131 can be directly connected to the pipe space 111 through the pipe outlet 1311, without the need to set the refrigerant guide hole 112 between the first space 131 and the pipe space 111. It is only necessary to set the refrigerant guide hole 112 on the wall surface between the third space 133 and the pipe space 111 to realize the connection between the third space 133 and the pipe space 111.

[0055] In addition, the connection position between the input and output pipes 4 and the indoor heat exchanger 2 (located in the first space 131), and the connection position between the pipe joint 41 and the internal and external machine connecting pipe (located in the piping space 111) are also locations where refrigerant leakage is prone to occur, and they also need to be detected. The size of the pipeline outlet 1311 is usually large, so that the refrigerant leaked in the first space 131 and the piping space 111 can quickly enter the third space 133 through the piping space 111 and the refrigerant guide hole 112, and be detected in time by the refrigerant detection sensor 3. Therefore, a refrigerant detection sensor 3 can be used to detect whether refrigerant leakage occurs in various locations where refrigerant leakage is prone to occur.

[0056] In addition, the input and output pipes 4 are arranged in the first space 131, and the refrigerant detection sensor 3 is located in the third space 133, so that the first space 131 and the third space 133 can be reasonably utilized to avoid the input and output pipes 4 and the refrigerant detection sensor 3 being integrated in one space, making the structure in the space too complicated.

[0057] Of course, the input and output pipes 4 may also be disposed in the third space 133 .

[0058] In some exemplary embodiments, the piping space 111 is provided at the bottom of the base 11, such as Figure 1 , Figure 2 and Fig.14 The pipeline outlet 1311 is arranged at the lower part of the first space 131, as shown in FIG. Figure 4 The refrigerant detection sensor 3 is disposed at the bottom of the third space 133, as shown in FIG. Figure 5 The refrigerant guide hole 112 is disposed at the bottom of the third space 133. Figure 8 , Fig. 9 and Fig.10 shown.

[0059] Since the density of the refrigerant is usually greater than the density of the air, such a configuration makes it easy for the refrigerant in the third space 133 to sink to the bottom and be detected by the refrigerant detection sensor 3, and also makes it easy for the refrigerant in the first space 131 to sink and the refrigerant in the piping space 111 to flow along the piping space 111 to the bottom of the third space 133 and be detected by the refrigerant detection sensor 3, and also makes it easy for the internal and external unit connecting pipes to extend from the bottom of the casing 1 to improve the aesthetics.

[0060] In some exemplary embodiments, the air conditioner indoor unit further includes an electric control box 5, such as Figure 5 and Fig.11 The electric control box 5 is disposed in the third space 133 and is electrically connected to the refrigerant detection sensor 3 .

[0061] In this way, the refrigerant detection sensor 3 and the electric control box 5 are relatively close to each other, which can reduce the wiring distance between the two, reduce the risk of wiring crimping, and make the wiring more reliable.

[0062] Of course, the refrigerant detection sensor 3 and the electric control box 5 may also be located on the left and right sides of the indoor heat exchanger 2 respectively.

[0063] When the electric control box 5 and the refrigerant detection sensor 3 are located in the third space 133 , the electric control box 5 may be located above the refrigerant detection sensor 3 . The input and output pipes 4 may be located in the first space 131 .

[0064] Alternatively, the input and output pipes 4 can also be integrated in the third space 133 (correspondingly, the third space 133 needs to be provided with a pipeline outlet 1311), that is, the input and output pipes 4, the refrigerant detection sensor 3 and the electric control box 5 are integrated in the space on the same side of the indoor sensor. At this time, the width of the third space 133 can be appropriately larger, and the width of the first space 131 can be appropriately reduced. Since the U-shaped tube of the indoor heat exchanger 2 generally does not directly abut the side walls on both sides of the casing 1, the first space 131 will still exist, but the space can be appropriately reduced to reduce the size of the indoor unit. However, there is still a risk of refrigerant leakage in the first space 131, so a refrigerant guide hole 112 can be opened in the first space 131, so that the refrigerant leaked in the first space 131 can flow into the third space 133 through the refrigerant guide hole 112 and the piping space 111 and be detected by the refrigerant detection sensor 3.

[0065] Of course, the electric control box 5 may also be disposed in the first space 131 , and the input and output tubes 4 may be located in the first space 131 or in the third space 133 .

[0066] In other words, the electric control box 5 and the input and output pipes 4 can be integrated in the space on the same side of the indoor sensor, or they can be located in the spaces on both sides of the indoor sensor. The input and output pipes 4 and the refrigerant detection sensor 3 can be integrated in the space on the same side of the indoor sensor, or they can be located in the spaces on both sides of the indoor sensor. The electric control box 5 and the refrigerant detection sensor 3 can be integrated in the space on the same side of the indoor sensor, or they can be located in the spaces on both sides of the indoor sensor. As long as the first space 131 and the third space 133 can be connected through the piping space 111 and the refrigerant guide hole 112, the leakage of refrigerant in various places can be detected by a refrigerant detection sensor 3, and the purpose of this application can be achieved, and therefore they should all be within the protection scope of this application.

[0067] In some exemplary embodiments, the number of the refrigerant guide holes 112 is multiple, such as Figure 1 , Figure 4 , Figure 8 , Fig. 9 and Fig.10 The plurality of refrigerant guide holes 112 are beneficial to improving the efficiency of the refrigerant in the first space 131 and the pipe space 111 entering the third space 133 .

[0068] The orthographic projections of the plurality of refrigerant guide holes 112 on the base 11 partially overlap with the orthographic projections of the refrigerant detection sensor 3 on the base 11. In other words, a portion of the refrigerant guide holes 112 are located directly behind the refrigerant detection sensor 3, and a portion of the refrigerant guide holes 112 are not located directly behind the refrigerant detection sensor 3, but are located in the peripheral area of ​​the refrigerant detection sensor 3.

[0069] This makes it easy for the refrigerant to enter the refrigerant detection sensor 3 from different directions, which is beneficial to improving the sensitivity of the refrigerant detection sensor 3; it is also convenient to set a structure for fixing the refrigerant detection sensor 3 directly behind the refrigerant detection sensor 3 to facilitate fixing the refrigerant detection sensor 3.

[0070] In some embodiments, Figure 8 , Fig. 9 and Fig.10 As shown, the refrigerant diversion holes 112 located in the peripheral area of ​​the refrigerant detection sensor 3 may include a plurality of refrigerant diversion holes 112 located on the lower side of the refrigerant detection sensor 3 (these refrigerant diversion holes 112 may be arranged in an array), and facing the piping space 111, which is conducive to the refrigerant sinking in the piping space 111 to enter the third space 133 as much as possible and quickly, thereby helping to improve the detection accuracy and detection sensitivity of the refrigerant detection sensor 3.

[0071] In one embodiment, the first space 131, the second space 132, and the third space 133 are sequentially distributed from left to right. Figure 7 Two refrigerant guide holes 112 are located directly behind the refrigerant detection sensor 3 , one refrigerant guide hole 112 is located on the left side of the refrigerant detection sensor 3 , and nine refrigerant guide holes 112 arranged in an array are located on the lower left side of the refrigerant detection sensor 3 .

[0072] In some exemplary embodiments, a limiting portion is provided in the first space 131 , and the refrigerant detection sensor 3 is limited in the limiting portion and clamped and fixed between the base 11 and the face frame 12 .

[0073] In this way, the refrigerant detection sensor 3 can be fixed by the limiting effect of the limiting part and the clamping effect between the base 11 and the surface frame 12, without the need to fix the refrigerant detection sensor 3 by fasteners (such as screws), which is beneficial to improving the installation efficiency of the refrigerant detection sensor 3.

[0074] In some exemplary embodiments, Figure 8 , Fig. 9 and Fig.10 As shown, the limiting portion includes a plurality of limiting ribs 113 disposed on the base 11. The plurality of limiting ribs 113 are arranged at intervals along the circumference of the refrigerant detection sensor 3, and the circumferential side wall of the refrigerant detection sensor 3 abuts against the plurality of limiting ribs 113.

[0075] like Figure 3 As shown, the face frame 12 is provided with a lower air outlet 122, and the housing 1 further includes a lower air outlet frame 15 provided at the lower air outlet 122. Figure 5 , Fig.11 and Fig.12 The lower air outlet frame 15 is fixedly connected to the base 11 and presses the refrigerant detection sensor 3. Figure 6 As shown, the refrigerant detection sensor 3 is fixed in the first space 131. The lower air outlet frame 15 can be fixedly connected to the base 11 by fasteners (such as screws).

[0076] In this way, the plurality of limiting ribs 113 can limit the circumference of the refrigerant detection sensor 3, preventing the refrigerant detection sensor 3 from moving in the left-right direction or in the up-down direction. The clamping effect of the lower air outlet frame 15 and the base 11 can prevent the refrigerant detection sensor 3 from moving in the front-back direction. In this way, the installation and fixation of the refrigerant detection sensor 3 is achieved without screw fixation, and the installation is quick and convenient.

[0077] like Figure 3 As shown, the face frame 12 may also be provided with an upper air outlet and an air inlet 123. The housing 1 also includes an upper air outlet frame 14 disposed at the upper air outlet. Crossflow impellers may be provided at the upper air inlet 123 and the lower air inlet 123, respectively. The indoor heat exchanger 2 is provided corresponding to the air inlet 123. Indoor air enters through the air inlet 123, flows through the indoor heat exchanger 2, and then flows out from the upper air outlet and the lower air outlet 122. The driving motors of the two crossflow impellers may be located in the first space 131 and the third space 133, respectively. The upper air outlet frame 14 and the lower air outlet frame 15 may be used to install structures such as air guide plates, filter screens, and air guide blades.

[0078] Among them, the limiting rib 113 mainly supports and limits the circumferential side wall of the refrigerant detection sensor 3, so the relative height between the limiting rib 113 and the refrigerant sensor in the front-to-back direction is not limited. For example, the height of the limiting rib 113 can be less than the height of the refrigerant sensor, and the refrigerant detection sensor 3 can also have a partially protruding structure extending from the limiting rib 113. A guiding inclined surface can also be set on the top of the limiting rib 113 to facilitate the insertion of the refrigerant detection sensor 3.

[0079] In some exemplary embodiments, a support protrusion 1131 is provided at one end of the limiting rib 113 close to the refrigerant detection sensor 3. Fig.10 and Fig.13 As shown, the wall surface (i.e., the rear wall surface) of the refrigerant detection sensor 3 facing away from the face frame 12 abuts against the support protrusion 1131. The base 11 is also provided with a support rib 114, as shown in FIG. Fig.13 As shown, the support rib 114 abuts against the wall surface (ie, the rear wall surface) of the refrigerant detection sensor 3 that is away from the surface frame 12 .

[0080] This can prevent the refrigerant detection sensor 3 from being closely attached to the inner wall of the base 11 , so that the refrigerant in the piping space 111 can also flow through the gap between the refrigerant detection sensor 3 and the base 11 , which is conducive to the refrigerant in the piping space 111 quickly entering the third space 133 .

[0081] In some exemplary embodiments, at least part of the limiting ribs 113 are configured as U-shaped ribs, such as Figure 8 , Fig. 9 and Fig.10 As shown, the opening of the U-shaped rib faces the refrigerant detection sensor 3.

[0082] Such a limiting rib 113 can play a supporting and limiting role for the refrigerant detection sensor 3 at two locations, and the limiting rib 113 itself has the effect of a reinforcing rib, which is beneficial to improving the fixing effect of the refrigerant detection sensor 3.

[0083] In one embodiment, Figure 8 , Fig. 9 and Fig.10 As shown, the plurality of limiting ribs 113 include four U-shaped ribs. Two of the U-shaped ribs are arranged relatively to each other up and down to limit the refrigerant detection sensor 3 up and down. The other two U-shaped ribs are arranged side by side on the left side of the refrigerant detection sensor 3 to limit the left side wall of the refrigerant detection sensor 3. The right side wall of the refrigerant detection sensor 3 can directly abut against the side wall of the base 11. Alternatively, a limiting rib 113 (the shape is not limited) or a protrusion can be set on the side wall of the base 11 to abut against the right side wall of the refrigerant detection sensor 3.

[0084] Furthermore, part of the limiting ribs 113 may also be configured to be concave-convex to cooperate with the refrigerant detection sensor 3, such as Figure 8 and Fig. 9 As shown, to achieve positioning.

[0085] In some exemplary embodiments, the lower air outlet frame 15 is provided with a stop rib 151, such as Fig.13 and Fig.15 As shown, the stop rib 151 is pressed against the wall surface (i.e., the front wall surface) of the refrigerant detection sensor 3 close to the face frame, and abuts against the refrigerant detection sensor 3. This can reduce the contact area between the lower air outlet frame 15 and the refrigerant detection sensor 3, thereby preventing the lower air outlet frame 15 from transmitting too much vibration to the refrigerant detection sensor 3, thereby helping to reduce the impact of vibration on the refrigerant detection sensor 3.

[0086] In some embodiments, only one end of the stop rib 151 abuts against the refrigerant detection sensor 3. Fig.13 As shown, this can further reduce the contact area between the lower outlet and the refrigerant detection sensor 3.

[0087] The number of the stop ribs 151 can be multiple, and the multiple stop ribs 151 are arranged at intervals, such as Fig.15 This is conducive to the balanced force of the refrigerant detection sensor 3 and a more secure fixation.

[0088] The embodiment of the present application further provides a floor-standing air conditioner, comprising an air conditioner outdoor unit and an air conditioner indoor unit as in any one of the above embodiments. The air conditioner indoor unit is connected to the air conditioner outdoor unit.

[0089] The table-type air conditioner provided in the embodiment of the present application includes the air-conditioning indoor unit of any one of the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be described in detail here.

[0090] In the description of this article, 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' 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 application and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0091] In the description of the embodiments of the present application, 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 this application can be understood according to specific circumstances.

[0092] Although the embodiments disclosed in the present application are as above, the described contents are only embodiments adopted for facilitating understanding of the present application, and are not intended to limit the present application. It should be noted that the above embodiments or embodiments are merely exemplary, and not restrictive. Therefore, the present application 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 application.

Claims

1. An air conditioner indoor unit for a floor-standing air conditioner, characterized in that: The air conditioner indoor unit comprises: a casing, an indoor heat exchanger and a refrigerant detection sensor; The casing includes a base and a face frame, the face frame cover is arranged on the base and encloses an installation space with the base, the installation space includes a first space, a second space and a third space arranged side by side and interconnected along the width direction of the casing; the indoor heat exchanger is arranged in the second space, and the refrigerant detection sensor is arranged in the third space; A piping space is recessed on the side of the base facing away from the face frame, and the piping space is configured to allow internal and external unit connecting pipes to pass through so that the internal and external unit connecting pipes can extend from either end in the width direction of the casing; the base is also provided with a refrigerant guide hole connected to the piping space; the refrigerant guide hole is configured to cooperate with the piping space to guide the refrigerant leaked in the first space to the third space through the piping space and the refrigerant guide hole.

2. The air conditioner indoor unit according to claim 1, characterized in that: The base is provided with a pipe outlet communicating with the pipe space, the pipe outlet is located in the first space, the first space is provided with input and output pipes connected to the indoor heat exchanger, the input and output pipes are connected with pipe joints; the pipe joint is provided at the pipe outlet, and is configured to be connected to the indoor and outdoor unit connecting pipes; The refrigerant guide hole is arranged on a wall surface between the third space and the pipe space.

3. The air conditioner indoor unit according to claim 2, characterized in that: The piping space is arranged at the bottom of the base, the pipeline outlet is arranged at the lower part of the first space, the refrigerant detection sensor is arranged at the bottom of the third space, and the refrigerant guide hole is arranged at the bottom of the third space.

4. The air conditioner indoor unit according to any one of claims 1 to 3, characterized in that: It also includes an electric control box, which is arranged in the third space and is electrically connected to the refrigerant detection sensor.

5. The air conditioner indoor unit according to any one of claims 1 to 3, characterized in that: A limiting portion is provided in the first space, and the refrigerant detection sensor is limited in the limiting portion and is clamped and fixed between the base and the surface frame.

6. The air conditioner indoor unit according to claim 5, characterized in that: The limiting portion includes a plurality of limiting ribs provided on the base, the plurality of limiting ribs are arranged at intervals along the circumference of the refrigerant detection sensor, and the circumferential side wall of the refrigerant detection sensor abuts against the plurality of limiting ribs; The surface frame is provided with a lower air outlet, and the casing also includes a lower air outlet frame arranged at the lower air outlet, the lower air outlet frame is fixedly connected to the base, and presses the refrigerant detection sensor to fix the refrigerant detection sensor in the first space.

7. The air conditioner indoor unit according to claim 6, characterized in that: A supporting protrusion is provided at one end of the limiting rib close to the refrigerant detection sensor, and the wall surface of the refrigerant detection sensor facing away from the face frame abuts against the supporting protrusion.

8. The air conditioner indoor unit according to claim 6, characterized in that: The base is also provided with a supporting rib, and the supporting rib abuts against the wall surface of the refrigerant detection sensor away from the surface frame.

9. The air conditioner indoor unit according to claim 6, characterized in that: At least part of the limiting ribs are configured as U-shaped ribs, and the openings of the U-shaped ribs face the refrigerant detection sensor.

10. The air conditioner indoor unit according to claim 6, characterized in that: The lower air outlet frame is provided with a stop rib, and the stop rib is pressed on the wall surface of the refrigerant detection sensor close to the surface frame.

11. The air conditioner indoor unit according to any one of claims 1 to 3, characterized in that: The number of the refrigerant guide holes is multiple; The orthographic projections of the plurality of refrigerant guide holes on the base partially overlap with the orthographic projections of the refrigerant detection sensor on the base.

12. A floor-standing air conditioner, characterized in that: It comprises the air-conditioning indoor unit as claimed in any one of claims 1 to 11.

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