Air conditioner indoor unit and heating and ventilation system

Abstract

The utility model discloses an air conditioner indoor unit and a heating and ventilation system, the air conditioner indoor unit comprises a box body, an evaporator, a refrigerant transmission pipe, a distributor and an expansion valve, and the box body comprises a side plate; the evaporator is arranged in the box body, and a piping area is formed between one side edge of the evaporator and the side plate; the refrigerant transmission pipe is arranged in the box body and is communicated with the evaporator; the distributor is arranged in the box body, located in the piping area and connected with the refrigerant connecting pipe located in the piping area. And the expansion valve is arranged in the box body, and the expansion valve is positioned outside the piping area, so that the expansion valve and the distributor are arranged at an interval and are communicated with each other. According to the technical scheme, the problem that the arrangement design difficulty of the refrigerant conveying pipes of the air conditioner indoor unit is large can be solved, and the installation efficiency of the distributor and the refrigerant conveying pipes is improved.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an indoor air conditioner and a heating and ventilation system. Background Art

[0002] In the related art, the distributor and the expansion valve in the indoor air conditioner are two key components, which play important roles in the air conditioning system. The expansion valve is used to control the flow rate of the refrigerant, expanding the high-pressure and high-temperature refrigerant into a low-pressure and low-temperature state, and then the distributor distributes the low-pressure and low-temperature refrigerant into each unit of the connected evaporator. However, the existing expansion valve is arranged close to the position of the distributor, resulting in a relatively crowded space near the distributor, making it difficult to arrange the refrigerant transmission pipes connected to the distributor. Utility Model Content

[0003] The embodiments of this application provide an indoor air conditioner, which can solve the problem of difficult layout design of the refrigerant transmission pipes in the indoor air conditioner, so as to improve the installation efficiency of the distributor and the refrigerant transmission pipes.

[0004] In a first aspect, the embodiments of this application provide an indoor air conditioner, which includes:

[0005] A box body, the box body includes a side plate;

[0006] An evaporator, the evaporator is arranged in the box body, and a piping area is formed between one side of the evaporator and the side plate;

[0007] Refrigerant transmission pipes, the refrigerant transmission pipes are arranged in the box body and communicated with the evaporator;

[0008] A distributor, the distributor is arranged in the box body, located in the piping area, and connected to the refrigerant connecting pipes located in the piping area; and

[0009] An expansion valve, the expansion valve is arranged in the box body, and the expansion valve is located outside the piping area, so as to be arranged at an interval from and communicated with the distributor.

[0010] In some embodiments, the indoor air conditioner further includes a support member and a water pump, the support member is arranged in the box body, the water pump is connected to the support member, and the water pump and the expansion valve are respectively located on opposite sides of the support member.

[0011] In some embodiments, the box body further includes a top plate connected to the side plate, the expansion valve is located between the top plate and the support member, and the axial direction of the expansion valve extends along the transverse direction of the top plate.

[0012] In some of these embodiments, the box body further includes a top plate connected to the side plate. The support member includes a support portion and a connecting portion. The support portion is connected to the side plate. The water pump is connected to the surface of the support portion facing away from the top plate. The connecting portion is bent and connected to the support portion, and one end of the connecting portion away from the support portion is connected to the top plate.

[0013] In some of these embodiments, the support portion includes a base plate and a surrounding plate. The water pump is connected to the surface of the base plate facing away from the top plate. The connecting portion is bent and connected to one edge of the base plate. The surrounding plate is connected around the remaining edges of the base plate, and the surrounding plate extends along the side away from the connecting portion. The surrounding plate is connected to the side plate.

[0014] In some of these embodiments, the side plate is provided with a fastening member. The surrounding plate includes a limiting sub-plate facing the side plate. A clamping opening is formed at the joint of the limiting sub-plate and the base plate. The fastening member is inserted into the clamping opening to abut against the limiting sub-plate.

[0015] In some of these embodiments, the side plate has a first connection hole, and the limiting sub-plate has a second connection hole corresponding to the first connection hole. The indoor air conditioner further includes:

[0016] A fastener that sequentially passes through the second connection hole and the first connection hole to fix the side plate and the limiting sub-plate.

[0017] In some of these embodiments, the connecting portion includes a connecting plate and an abutting plate. The connecting plate is connected between the support portion and the abutting plate, and the connecting plate is disposed opposite to the side plate. The abutting plate is detachably connected to the top plate of the box body, and the abutting plate extends along the direction away from the side plate.

[0018] In some of these embodiments, the evaporator includes a side plate disposed opposite to the side plate. A piping area is formed between the side plate and the side plate. The connecting portion includes a grounding plate. The grounding plate is connected to the connecting plate and is detachably connected to the side plate.

[0019] In some of these embodiments, the joint of the support portion and the connecting portion is connected with a smooth transition;

[0020] and / or, the support portion and the connecting portion are integrally provided;

[0021] and / or, a boss is convexly provided on the surface of the support portion facing away from the top plate. The boss is disposed opposite to the water pump.

[0022] In some of these embodiments, the air conditioner indoor unit further includes a water level switch member, and the support member further includes an extension portion. The extension portion is connected to one side of the support portion and extends towards the outside of the support portion. The water level switch member is detachably connected to the extension portion.

[0023] In some of these embodiments, the extension portion includes an extension plate and a mounting plate. The extension plate is connected to the top end of the support portion, and the mounting plate is bent and connected to the side of the extension plate facing away from the support portion;

[0024] The water level switch member includes a detection portion and a sliding portion connected to each other, and the mounting plate is slidably connected to the sliding portion.

[0025] In some of these embodiments, a relief notch is provided at one end of the mounting plate away from the extension plate. The relief notch is used to make way for the detection portion when the sliding portion slides.

[0026] In some of these embodiments, the sliding portion is further provided with a limiting hole, and the mounting plate is provided with a limiting convex portion. When the sliding portion slides into place, the limiting hole is fitted and inserted with the limiting convex portion.

[0027] In some of these embodiments, the air conditioner indoor unit further includes a sound absorption member, and the sound absorption member is wrapped around the outside of the expansion valve.

[0028] In some of these embodiments, the evaporator includes a side plate opposite to the side board, and a piping area is formed between the side plate and the side board; the evaporator further includes an evaporation main body, the evaporation main body is inclined and arranged in the box body, and the evaporation main body is communicated with the refrigerant transmission pipe, and the side plate is connected to the side wall surface of the evaporation main body.

[0029] In some of these embodiments, the air conditioner indoor unit further includes a motor, the motor is arranged in the box body, and the expansion valve is located below the motor.

[0030] In a second aspect, an embodiment of the present application further provides a heating and ventilation system, including an air conditioner outdoor unit and the air conditioner indoor unit as described above. The air conditioner indoor unit and the air conditioner outdoor unit form a refrigerant cycle.

[0031] For the air conditioner indoor unit and the heating and ventilation system according to the present application, when the distributor is located in the piping area between the side plate of the box body and the side of the evaporator, the expansion valve is arranged outside the piping area at an interval from the distributor and communicated therewith. In this way, the expansion valve and the distributor are separately arranged in the box body, which helps to reduce the installation interference of the expansion valve on the refrigerant transmission pipe, optimize the overall layout inside the air conditioner indoor unit, so that more space can be provided around the distributor for the arrangement of the refrigerant transmission pipe, making the design of the refrigerant transmission pipe more flexible and easier to implement, reducing the technical requirements for the design of the refrigerant transmission pipe, and thus solving the problem of great difficulty in the design of the refrigerant transmission pipe of the air conditioner indoor unit, improving the installation efficiency of the distributor and the refrigerant transmission pipe, and at the same time enhancing the reliability and maintainability of the air conditioner indoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0033] Figure 1 It is a partial structural schematic diagram of the air conditioner indoor unit of the present application from the perspective of the installation state;

[0034] Figure 2 It is a partial structural schematic diagram of the air conditioner indoor unit of the present application from another perspective;

[0035] Figure 3 It is a structural schematic diagram of the air conditioner indoor unit of the present application after the side plate and the top plate are disassembled;

[0036] Figure 4 It is a structural schematic diagram of the air conditioner indoor unit of the present application from the perspective of the installation state after the side plate and the top plate are disassembled;

[0037] Figure 5 It is a structural schematic diagram of the water pump, the support member and the expansion valve of the air conditioner indoor unit of the present application;

[0038] Figure 6 It is an assembly structural schematic diagram of the support member and the box body of the air conditioner indoor unit of the present application;

[0039] Figure 7 It is Figure 6 The partial enlarged view at A in;

[0040] Figure 8 It is a structural schematic diagram of the support member and the water level switch member of the air conditioner indoor unit of the present application;

[0041] Figure 9It is a schematic structural diagram of the support member and the water level switch member of the air conditioner indoor unit of the present application from another perspective;

[0042] Figure 10 It is a schematic assembly structure diagram of the support member and the water level switch member of the air conditioner indoor unit of the present application.

[0043] Explanation of the reference numerals in the drawings:

[0044] 100, air conditioner indoor unit; 10, box body; 11, side plate; 111, insertion fastener; 112, first connection hole; 12, bottom plate and top plate; 13, baffle; 20, evaporator; 21, side plate; 22, evaporation main body; 221, refrigerant pipe circuit; 30, refrigerant transmission pipe; 40, distributor; 50, expansion valve; 60, support member; 61, support part; 611, substrate; 612, surrounding plate; 6121, limiting sub-plate; 612a, second connection hole; 613, boss; 614, clamping port; 62, connecting part; 621, connecting plate; 622, abutting plate; 623, grounding plate; 63, extension part; 631, extension plate; 632, mounting plate; 6321, relief notch; 6322, limiting convex part; 70, water pump; 80, fastener; 90, water level switch member; 91, detection part; 92, sliding part; 921, limiting hole; 922, abutting block; 90a, refrigerant inlet pipe; 90b, refrigerant outlet pipe.

[0045] The realization of the purpose of the present application, functional features and advantages will be further described with reference to the accompanying drawings in combination with embodiments. Specific embodiments

[0046] To make the purpose, technical solution and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0047] When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples of devices and methods that are consistent with some aspects of the present application as detailed in the appended claims.

[0048] In the description of the present application, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, in the description of the present application, unless otherwise specified, "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0050] One aspect of the present application provides a heating, ventilation, and air conditioning (HVAC) system. In the embodiments of the present application, the HVAC system includes, but is not limited to, devices such as air conditioners, multi-split systems, and heat pumps, and can be applied to large-scale places such as shopping malls and office buildings. Among them, the HVAC system may include an indoor unit of the air conditioner, an outdoor unit of the air conditioner, and a connecting pipe. The indoor unit of the air conditioner is connected to the outdoor unit of the air conditioner through the connecting pipe to form a refrigerant cycle between the indoor unit and the outdoor unit. In some actual usage scenarios, the indoor unit of the air conditioner in the present application can be installed indoors. The outdoor unit of the air conditioner is responsible for refrigeration or heating, transports the refrigerant through the connecting pipe, and the refrigerant exchanges heat with the indoor air and outdoor air respectively. The indoor unit of the air conditioner is responsible for delivering cold air or hot air into the room to achieve the effect of cooling or heating.

[0051] The indoor unit of the air conditioner may include, but is not limited to, structural forms such as duct units, wall-mounted indoor units of air conditioners, floor-standing indoor units of air conditioners, or ceiling-mounted units, etc.

[0052] The distributor and the expansion valve in the indoor unit of the air conditioner are two key components, and they play important roles in the air conditioning system. The expansion valve is used to control the flow rate of the refrigerant, expanding the high-pressure and high-temperature refrigerant into a low-pressure and low-temperature state, and then the distributor distributes the refrigerant in the low-pressure and low-temperature state to each unit of the connected evaporator. However, the existing expansion valve is arranged close to the position of the distributor, resulting in a relatively crowded space near the distributor, making it difficult to design the refrigerant transmission pipe connected to the distributor.

[0053] To solve the above problems, please refer to Figures 1 to 3, on the other hand, this application proposes an indoor air conditioner 100. In the embodiment of this application, the indoor air conditioner 100 includes a box body 10, an evaporator 20, a refrigerant transmission pipe 30, a distributor 40, an expansion valve 50, a refrigerant input pipe 90a, and a refrigerant output pipe 90b.

[0054] Among them, the box body 10 serves as the external shell of the indoor air conditioner 100, and the box body 10 can be arranged in a cuboid shape. The evaporator 20, the refrigerant transmission pipe 30, the distributor 40, and the expansion valve 50 are arranged inside the box body 10. The box body 10 provides protection and isolation for each component inside the indoor air conditioner 100, ensuring the safety and stability of the indoor air conditioner 100. The box body 10 can be made of metal materials such as aluminum alloy or stainless steel to meet requirements such as high strength and corrosion resistance. Alternatively, the box body 10 can also be made of plastic materials to achieve lightweight, and this application does not limit this. Specifically, the box body 10 can include a top plate 12, side plates 11, two baffles 13, and a cover plate (not shown). The top plate 12 is used to connect and support components such as the evaporator 20 and the refrigerant transmission pipe 30, and the side plates 11 and the two baffles 13 are connected to the top plate 12. And the two baffles 13 are respectively connected to the opposite sides of the side plates 11, thereby protecting the sides of the indoor air conditioner 100, and an air outlet is formed at the relative position of the side plates 11. The cover plate is connected to the side plates 11 and the two baffles 13 and is arranged opposite to the top plate 12. When the indoor air conditioner 100 is fixed indoors, the top plate 12 is at the top of the indoor air conditioner 100, and the cover plate is located on the ceiling as a decorative panel. The top plate 12, the side plates 11, the two baffles 13, and the cover plate can be connected by means such as snap connection, riveting, welding, and bolt connection, and this application will not elaborate on this here.

[0055] Air needs to flow through the evaporator 20 to achieve heat exchange with the refrigerant in the evaporator 20, so as to realize the cooling of the air. A piping area is formed between one side of the evaporator 20 and the side plate 11. It should be noted that the formation of the piping area between the side of the evaporator 20 and the side plate 11 does not only refer to the directly opposite space between the side of the evaporator 20 and the side plate 11, but can be a rectangular space opposite to the side plate 11 bounded by the upper and lower ends and the left and right ends of the side of the evaporator 20.

[0056] A plurality of refrigerant transfer pipes 30 are provided. One ends of the plurality of refrigerant transfer pipes 30 are respectively connected to the input ports of a plurality of refrigerant pipe circuits 221 of the evaporator 20 in a one-to-one correspondence. The distributor 40 has a liquid inlet hole and a plurality of liquid outlet holes. The other ends of the plurality of refrigerant transfer pipes 30 are respectively connected to the plurality of liquid outlet holes in a one-to-one correspondence. The expansion valve 50 can be one of an electronic expansion valve 50, a thermal expansion valve 50, and an electric ball valve. The expansion valve 50 is located outside the piping area and is arranged at an interval and communicated with the distributor 40. It can be understood that the expansion valve 50 and the liquid inlet hole of the distributor 40 are communicated through a pipeline, and the expansion valve 50 is also connected to the refrigerant input pipe 90a to expand refrigerants such as high-pressure and high-temperature refrigerant into a low-pressure and low-temperature state.

[0057] Based on the air conditioner indoor unit 100 and the HVAC system of the present application, when the distributor 40 is located in the piping area between the side plate 11 of the box body 10 and one side of the evaporator 20, the expansion valve 50 is arranged outside the piping area at an interval and communicated with the distributor 40. In this way, the expansion valve 50 and the distributor 40 are separately arranged in the box body 10, which helps to reduce the installation interference of the expansion valve 50 on the refrigerant transfer pipe 30, optimize the overall layout inside the air conditioner indoor unit 100, so that more space can be provided around the distributor 40 for the arrangement of the refrigerant transfer pipe 30, making the design of the refrigerant transfer pipe 30 more flexible and easier to implement, reducing the technical requirements for the design of the refrigerant transfer pipe 30, and then solving the problem of the large design difficulty of the refrigerant transfer pipe 30 of the air conditioner indoor unit 100, improving the installation efficiency of the distributor 40 and the refrigerant transfer pipe 30, and at the same time enhancing the reliability and maintainability of the air conditioner indoor unit 100.

[0058] In addition, the air conditioner indoor unit 100 may further include a motor (not shown), a wind wheel (not shown), and a sound-absorbing member (not shown). The motor and the wind wheel are both arranged in the box body 10. The motor is used to drive the wind wheel to rotate to drive the air flow to flow out from the air outlet to cool the indoor air. The sound-absorbing member is wrapped outside the expansion valve 50. The sound-absorbing member can be sound-absorbing cotton or sound-absorbing foam. The sound-absorbing member can reduce the working noise of the expansion valve 50, and since the expansion valve 50 is located outside the piping area, the sound-absorbing member can wrap the expansion valve 50 alone without being interfered by the distributor 40. Further, in the installation state of the air conditioner indoor unit 100 in the prior art, the space above the motor is usually wasted, and in the present application, the expansion valve 50 can be located above the motor. Thus, the space above the motor can be fully utilized, so that not only more space can be provided around the distributor 40 for the arrangement of the refrigerant transfer pipe 30, but also the size of the box body 10 will not become larger due to the separate layout of the expansion valve 50 and the distributor 40, improving the space utilization rate inside the box body 10.

[0059] Refer to Figures 3 to 5, in one embodiment, the air conditioner indoor unit 100 further includes a support member 60 and a water pump 70. Among them, the water pump 70 is used to pump the condensed water of the evaporator 20 into the drainage pipe to prevent water from accumulating in the box body 10 and avoid the growth of bacteria, mold or other health problems. The support member 60 can be made of metal materials such as aluminum alloy or stainless steel to meet requirements such as high strength and corrosion resistance. Alternatively, the support member 60 can also be made of plastic material to achieve light weight. This application does not limit this. The support member 60 is disposed in the box body 10, the water pump 70 is connected to the support member 60, and the water pump 70 and the expansion valve 50 are respectively located on opposite sides of the support member 60. When the air conditioner indoor unit 100 is in the installed state, in this way, a space for accommodating the expansion valve 50 is formed above the water pump 70 through the support member 60, so that not only more space can be provided around the distributor 40 for the arrangement of the refrigerant transmission pipe 30, but also it is avoided that the separate layout of the expansion valve 50 and the distributor 40 will cause the size of the box body 10 to become larger in the lateral direction.

[0060] It can be understood that the thickness direction of the box body 10 is the vertical direction arranged in parallel, and the extension direction of the top plate of the box body 10 is the lateral direction. The expansion valve 50 can be arranged in a cylindrical shape, and the length of the axial direction of the expansion valve 50 is greater than the length of the radial direction. Further, the axial direction of the expansion valve 50 extends along the lateral direction of the top plate 12 to improve the utilization rate of the lateral dimension of the space above the water pump 70. Thus, compared with the way that the axial direction of the expansion valve 50 extends along the vertical direction of the support member 60, the space occupied by the expansion valve 50 in the thickness direction of the box body 10 is reduced, and further, the height of the support member 60 for supporting the water pump 70 can be effectively reduced, so as to reduce the size of the box body 10 in the thickness direction, and further reduce the overall size of the air conditioner outdoor unit.

[0061] Refer to Figures 4 to 6 , optionally, the support member 60 includes a support portion 61 and a connecting portion 62. The support portion 61 is connected to the side plate 11, the water pump 70 is connected to the surface of the support portion 61 facing away from the top plate 12, the connecting portion 62 is bent and connected to the support portion 61, and one end of the connecting portion 62 away from the support portion 61 is connected to the top plate 12. Among them, the support portion 61 and the connecting portion 62 can be arranged in an "L" shape, and by connecting the support portion 61 to the side plate 11 and the connecting portion 62 to the top plate 12, the stability of the connection between the support member 60 and the box body 10 is further improved, and further, the stability of the support member 60 for supporting and fixing the water pump 70 is improved, avoiding the water pump 70 from shaking relative to the box body 10 during use, and further improving the use reliability of the air conditioner indoor unit 100.

[0062] Furthermore, the joint between the support portion 61 and the connecting portion 62 is smoothly transitionally connected. This makes the joint between the support portion 61 and the connecting portion 62 more aesthetically pleasing, and it is not easily scratched when touched by installers or users.

[0063] Optionally, the support portion 61 and the connecting portion 62 are integrally provided. That is, the support portion 61 and the connecting portion 62 can be made into an integral structure by stamping a single plate body. In this way, the number of components in the support member 60 can be reduced, making the overall structure of the support member 60 simpler and the overall structure of the support member 60 stronger.

[0064] Optionally, a boss 613 protrudes from the surface of the support portion 61 facing away from the top plate 12, and the boss 613 is disposed opposite to the water pump 70. Since the setting of the water pump 70 increases the stress at the corresponding position of the support portion for the water pump 70, the boss 613 is provided to improve the flexural resistance of the support portion 61. At the same time, the boss 613 is disposed relative to the water pump 70 to increase the strength of the support portion 61 at the position corresponding to the water pump 70, which helps to prevent deformation or damage of the support portion 61.

[0065] Refer to Figures 4 to 6 In some structural forms, the support portion 61 includes a base plate 611 and a surrounding plate 612. The connecting portion 62 is bent and connected to one edge of the base plate 611, and the surrounding plate 612 is connected around the remaining edges of the base plate 611. Moreover, the surrounding plate 612 extends along the side away from the connecting portion 62, and the surrounding plate 612 is connected to the side plate 11. Among them, the base plate 611 and the surrounding plate 612 can be formed by bending a plate body. The water pump 70 is connected to the surface of the base plate 611 facing away from the top plate 12, and the water pump 70 can be fixed to the top plate 12 by detachable means such as screw connection. In this way, both the connection stability between the water pump 70 and the base plate 611 can be ensured, and at the same time, the disassembly and assembly efficiency of the water pump 70 and the base plate 611 can be improved. The surrounding plate 612 not only plays a role in positioning and connecting with the side plate 11, but also the surrounding plate 612 is connected around the remaining edges of the base plate 611 except the connecting portion 62. It can not only improve the overall strength of the support portion 61, but also the surrounding plate 612 can play a role in limiting the water pump 70 before the installation of the water pump 70 on the base plate 611, so that the water pump 70 is not easily dropped from the base plate 611 when placed on the base plate 611, improving the safety of the connection between the water pump 70 and the support portion 61.

[0066] Combined with reference to Figures 6 to 8, Further, the side plate 11 is provided with a fastening member 111, and the surrounding plate 612 includes a limiting sub-plate 6121 facing the side plate 11. A clamping opening 614 is formed at the joint of the limiting sub-plate 6121 and the base plate 611. The fastening member 111 is inserted into the clamping opening 614 to abut against the limiting sub-plate 6121. Wherein, the fastening member 111 may be a plate-like structure protruding from the surface of the side plate 11 facing the bracket member. During installation, by passing the fastening member 111 through the clamping opening 614 and then abutting against the surface of the limiting sub-plate 6121 facing away from the side plate 11, the limiting sub-plate 6121 is laterally limited, so as to restrict the movement of the limiting sub-plate 6121 in the lateral direction of the box body 10, thereby realizing that the surrounding plate 612 and the side plate 11 are fixed in the lateral direction of the box body 10, and further ensuring the convenience of subsequent connection between the side plate 11 and the limiting sub-plate 6121 in the vertical direction of the box body 10. By using the design of the fastening member 111, the limiting sub-plate 6121 and the clamping opening 614, the quick, simple and reliable pre-fixation of the limiting sub-plate 6121 and the side plate 11 in the lateral direction of the box body 10 can be realized.

[0067] Furthermore, the side plate 11 has a first connection hole 112, and the limiting sub-plate 6121 has a second connection hole 612a corresponding to the first connection hole 112. The air conditioner indoor unit 100 further includes a fastening member 80, which sequentially passes through the second connection hole 612a and the first connection hole 112 to fix the side plate 11 and the limiting sub-plate 6121. Wherein, the first connection hole 112 and the second connection hole 612a may be threaded holes, and the fastening member 80 may be a screw. The side plate 11 and the limiting sub-plate 6121 are fixed by using the screw to realize the position stability of the side plate 11 and the limiting sub-plate 6121 in the vertical direction of the box body 10. This fixing method is relatively simple to install and easy to disassemble, which is convenient for subsequent maintenance.

[0068] Refer to Figure 4 , Figure 5 and Figure 9, in some structural forms, the connecting part 62 includes a connecting plate 621 and an abutting plate 622. The connecting plate 621 is connected between the supporting part 61 and the abutting plate 622, and the connecting plate 621 is disposed opposite to the side plate 11. The abutting plate 622 is detachably connected to the top plate 12 of the box body 10. Among them, the plate-like structure of the connecting plate 621 reduces the occupied space of the connecting part 62 in the box body 10. And the abutting plate 622 can be disposed in a fitting manner with the top plate 12, so as to increase the contact area between the connecting part 62 and the top plate 12, thereby improving the connection stability between the connecting part 62 and the top plate 12. It should be noted that the abutting plate 622 and the top plate 12 can be fixed by screws or snap fasteners, etc. In this way, the installation operation is relatively simple and easy to disassemble. At the same time, the abutting plate 622 extends in a direction away from the side plate 11, so as to avoid the abutting plate 622 occupying the space directly opposite to the supporting part 61 and the top plate 12, thereby avoiding interference with the installation of the expansion valve 50.

[0069] Further, the evaporator 20 includes an evaporation main body 22 and a side plate 21. In order to improve the heat exchange capacity of the evaporator 20, the evaporation main body 22 is inclined and disposed in the box body 10. Specifically, taking the thickness direction of the box body 10 (such as the vertical direction) as an example, the top of the evaporation main body 22 rotates downward by a certain angle around the bottom of the evaporation main body 22, so as to form an inclined setting. It can be understood that when the thickness of the box body 10 is fixed, designing the evaporation main body 22 to be inclined can increase the area of the evaporation main body 22, thereby increasing the heat exchange area, and thus improving the heat exchange efficiency. And the side plate 21 is connected to the side wall surface of the evaporation main body 22. And the evaporation main body 22 is provided with a plurality of refrigerant pipe circuits 221, and the plurality of refrigerant pipe circuits 221 have an input port and an output port. The input port and the output port both pass through the side plate 21, and the plurality of output ports are all communicated with the refrigerant output pipe through pipelines, so as to realize the communication between the evaporation main body 22 and the refrigerant transmission pipe 30. And a piping area is formed between the side plate 21 and the side plate 11. The side plate 11 is provided with through holes for the refrigerant input pipe 90a and the refrigerant output pipe to pass through. In this way, through the setting of the side plate 21, even if the air conditioner indoor unit 100 shakes during transportation or installation, the hard contact between the side wall surface of the evaporation main body 30 and the side plate 11 can be effectively reduced, so as to improve the protection of the evaporation main body 22. In addition, when the evaporation main body 22 is inclined, the expansion valve 50 can be located near the side between the side plate 22 and the side plate 11, or can also be located above or below the evaporation main body 22, so as to make full use of the space above or below the evaporation main body 22, thereby not only providing more space around the distributor 40 for the setting of the refrigerant transmission pipe 30, but also avoiding the box body 10 becoming larger in size after the expansion valve 50 and the distributor 40 are separately arranged, so as to improve the space utilization rate inside the box body 10.

[0070] The connecting portion 62 may further include a grounding plate 623 which is connected to the connecting plate 621, and the grounding plate 623 can be detachably connected to the side plate 21 of the evaporator 20 by means such as screw connection. Thereby, not only the installation stability of the support member 60 can be further improved, but also after the side plate 21 is connected to the grounding plate 623, the static electricity accumulation of the evaporator 20 can be prevented, electromagnetic interference can be reduced, and safety protection for the evaporator 20 can be provided.

[0071] Referring to Figures 8 to 10 , in some structural forms, the air conditioner indoor unit 100 further includes a water level switch member 90. Among them, the main function of the water level switch member 90 is to monitor and control the condensate discharge of the air conditioner indoor unit 100. That is, when the condensate of the evaporator 20 reaches a certain water level, the water level switch member 90 will be triggered to send a signal to notify the air conditioner indoor unit 100 to stop operating or electrically start the water pump 70 to suck the condensate, so as to prevent the condensate from overflowing, avoid water leakage accidents indoors, and improve the use safety of the air conditioner indoor unit 100. The support member 60 further includes an extension portion 63 which is connected to the top end of the support portion 61 and extends towards the outside of the support portion 61. The extension portion 63 and the support portion 61 may be an integral structure, so as to improve the structural strength of the extension portion 63. At the same time, the extension portion 63 extends towards the outside of the support portion 61 to avoid the extension portion 63 interfering with the water pump 70 located on the support portion 61. The water level switch member 90 is detachably connected to the extension portion 63, so that the water pump 70 and the water level switch member 90 can be integrated at the support member 60 at the same time, facilitating the electrical connection between the water pump 70 and the water level switch member 90.

[0072] Further, the extension portion 63 includes an extension plate 631 and a mounting plate 632. The extension plate 631 is connected to the top end of the support portion 61, and the mounting plate 632 is bent and connected to the side of the extension plate 631 facing away from the support portion 61. The water level switch member 90 includes a detection portion 91 and a sliding portion 92 which are connected. The mounting plate 632 is slidably connected to the sliding portion 92. Among them, the detection portion 91 is used to detect the water level of the condensate. By slidably connecting the mounting plate 632 and the sliding portion 92, the installation and disassembly of the extension portion 63 and the water level switch member 90 are realized. In this way, the above fixing method is convenient and fast for the disassembly and assembly of the extension portion 63 and the water level switch member 90. Specifically, by arranging the mounting plate 632 in a plate shape, a chute is provided on the sliding portion 92 of the water level switch member 90 for the mounting plate 632 to slide and insert. In addition, a contact block 922 is provided at the end of the chute on the sliding portion 92, so that when the mounting plate 632 slides to abut against the contact block 922, the sliding of the sliding portion 92 is restricted, thereby ensuring the stability of the relative positions of the mounting plate 632 and the sliding portion 92. Or, in other embodiments, a chute is provided on the mounting plate 632, and a slider is provided on the sliding portion 92 to slidably connect with the chute.

[0073] Optionally, a relief notch 6321 is provided at one end of the mounting plate 632 away from the extension plate 631. The relief notch 6321 is used to make way for the detection part 91 when the sliding part 92 slides. And when the sliding part 92 slides in place, the wall surface of the mouth of the relief notch 6321 abuts against the detection part 91. So that when the mounting plate 632 slides to abut against the wall surface of the mouth of the relief notch 6321, the continuous sliding of the sliding part 92 is restricted, thereby ensuring the stability of the relative positions of the mounting plate 632 and the sliding part 92.

[0074] Optionally, the sliding part 92 is further provided with a limiting hole 921, and the mounting plate 632 is provided with a limiting convex part 6322. And when the sliding part 92 slides in place, the limiting hole 921 and the limiting convex part 6322 are adaptively inserted and combined. Wherein, the limiting convex part 6322 has a certain elasticity. When the sliding part 92 slides on the mounting plate 632, the sliding part 92 presses the limiting convex part 6322, so that the elastic part is pressed, thereby enabling the water level switch part 90 to slide smoothly. When the sliding part 92 slides in place, the limiting convex part 6322 is opposite to the limiting hole 921 on the sliding part 92, and the limiting convex part 6322 restores its elastic deformation, so that the limiting convex part 6322 is adaptively inserted and combined with the limiting hole 921, thereby restricting the continuous sliding of the sliding part 92 and fixing the water level switch part 90 on the mounting plate 632. When it is necessary to remove the water level switch part 90, the limiting convex part 6322 can be pressed, so that the limiting convex part 6322 moves away from the limiting hole 921, thereby enabling the limiting convex part 6322 to disengage from the insertion with the limiting hole 921, and thus the water level switch part 90 can be smoothly slid out, facilitating the removal of the water level switch part 90.

[0075] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0076] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An air conditioner indoor unit, characterized in that: include: A box body, the box body comprising side panels; An evaporator, the evaporator is arranged in the box, and a piping area is formed between one side of the evaporator and the side plate; A refrigerant transmission pipe, the refrigerant transmission pipe is arranged in the box body and communicated with the evaporator; Allocator , the distributor is disposed in the box body, located in the piping area, and connected to the refrigerant connecting pipe located in the piping area; and An expansion valve is disposed in the housing and is located outside the piping area so as to be spaced apart from and communicated with the distributor.

2. The air conditioner indoor unit according to claim 1, characterized in that: The air conditioner indoor unit further comprises a supporting member and a water pump. The supporting member is arranged in the box body, the water pump is connected to the supporting member, and the water pump and the expansion valve are respectively located on opposite sides of the supporting member.

3. The air conditioner indoor unit according to claim 2, characterized in that: The box body further includes a top plate connected to the side plates, the expansion valve is located between the top plate and the supporting member, and the axial direction of the expansion valve extends along the lateral direction of the top plate.

4. The air conditioner indoor unit according to claim 2, characterized in that: The box body also includes a top plate connected to the side plates, the supporting member includes a supporting portion and a connecting portion, the supporting portion is connected to the side plates, the water pump is connected to a surface of the supporting portion facing away from the top plate, the connecting portion is bent and connected to the supporting portion, and one end of the connecting portion away from the supporting portion is connected to the top plate.

5. The air conditioner indoor unit according to claim 4, characterized in that: The supporting portion includes a base plate and a surrounding plate, the water pump is connected to the surface of the base plate facing away from the top plate, the connecting portion is bent and connected to one edge of the base plate, the surrounding plate is connected to the remaining edge of the base plate, and the surrounding plate extends along a side away from the connecting portion, and the surrounding plate is connected to the side plate.

6. The air conditioner indoor unit according to claim 5, characterized in that: The side plate is provided with a buckle, the enclosure includes a limiting sub-plate facing the side plate, a clamping opening is formed at the junction of the limiting sub-plate and the base plate, and the buckle is inserted into the clamping opening to abut against the limiting sub-plate.

7. The air conditioner indoor unit according to claim 6, characterized in that: The side plate has a first connection hole, the limiting sub-plate has a second connection hole corresponding to the first connection hole, and the air conditioner indoor unit further includes: A fastener passes through the second connection hole and the first connection hole in sequence to fix the side plate and the limiting sub-plate.

8. The air conditioner indoor unit according to claim 4, characterized in that: The connecting portion includes a connecting plate and an abutment plate, wherein the connecting plate is connected between the supporting portion and the abutment plate, and the connecting plate is arranged opposite to the side plate, the abutment plate is detachably connected to the top plate of the box body, and the abutment plate extends in a direction away from the side plate.

9. The air conditioner indoor unit according to claim 8, characterized in that: The evaporator comprises a side plate arranged opposite to the side plate, and a piping area is formed between the side plate and the side plate; The connecting portion comprises a grounding plate, the grounding plate is connected to the connecting plate, and the grounding plate is detachably connected to the side plate.

10. The air conditioner indoor unit according to any one of claims 4 to 9, characterized in that: The joint between the support portion and the connection portion is smoothly transitionally connected; And / or, the support portion and the connecting portion are integrally provided; And / or, a boss is protruding from a surface of the support portion facing away from the top plate, and the boss is arranged opposite to the water pump.

11. The air conditioner indoor unit according to any one of claims 4 to 9, characterized in that: The air conditioner indoor unit further includes a water level switch, and the support member further includes an extension portion, which is connected to one side of the support portion and extends toward the outside of the support portion, and the water level switch is detachably connected to the extension portion.

12. The air conditioner indoor unit according to claim 11, characterized in that: The extension portion includes an extension plate and a mounting plate, the extension plate is connected to the top end of the support portion, and the mounting plate is bent and connected to a side of the extension plate away from the support portion; The water level switch element comprises a detection part and a sliding part connected to each other, and the mounting plate is slidably connected to the sliding part.

13. The air conditioner indoor unit according to claim 12, characterized in that: A clearance notch is provided at one end of the mounting plate away from the extension plate, and the clearance notch is used to make way for the detection part when the sliding part slides.

14. The air conditioner indoor unit according to claim 12, characterized in that: The sliding part is also provided with a limiting hole, and the mounting plate is provided with a limiting convex part. When the sliding part slides into place, the limiting hole and the limiting convex part are adapted to be inserted.

15. The air conditioner indoor unit according to any one of claims 1 to 9, characterized in that: The air conditioner indoor unit further includes a sound-absorbing component, and the sound-absorbing component is wrapped around the outer side of the expansion valve.

16. The air conditioner indoor unit according to claim 1, characterized in that: The evaporator comprises a side plate arranged opposite to the side plate, and a piping area is formed between the side plate and the side plate; The evaporator further comprises an evaporation body, which is obliquely arranged in the box body and communicated with the refrigerant transmission pipe, and the side plate is connected to the side wall surface of the evaporation body.

17. A HVAC system, characterized in that: It comprises an air-conditioning outdoor unit and an air-conditioning indoor unit as claimed in any one of claims 1 to 16, wherein the indoor unit and the outdoor unit form a refrigerant cycle.

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