Air conditioner indoor unit and heating and ventilation system

Abstract

The present application discloses an air conditioner indoor unit and a heating and ventilation system. The air conditioner indoor unit comprises a housing, an evaporator, refrigerant conveying pipes, a distributor, and an expansion valve; the housing comprises a side plate; the evaporator is arranged in the housing; a pipe distribution area is formed between one side edge of the evaporator and the side plate; the refrigerant conveying pipes are arranged in the housing and communicated with the evaporator; the distributor is arranged in the housing, located in the pipe distribution area, and connected to a refrigerant connecting pipe located in the pipe distribution area; and the expansion valve is arranged in the housing, and the expansion valve is located outside the pipe distribution area, so that the expansion valve is spaced apart from and communicated with the distributor.

Description

Air conditioning indoor unit and HVAC system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 25, 2024, with application number 2024205874260 and invention name “Air Conditioning Indoor Unit and HVAC System”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the technical field of air conditioning, and in particular to an air conditioning indoor unit and a heating and ventilation system. Background Art

[0003] In the related art, the distributor and expansion valve in an air conditioner indoor unit are two key components that play a vital role in the air conditioning system. The expansion valve controls the flow of refrigerant, expanding the high-pressure, high-temperature refrigerant to a low-pressure, low-temperature state. The distributor then distributes the low-pressure, low-temperature refrigerant to the connected evaporator units. However, existing expansion valves are located close to the distributor, resulting in a crowded space near the distributor, making the layout and design of the refrigerant transmission pipes connected to the distributor difficult. Summary of the Invention

[0004] An embodiment of the present application provides an air-conditioning indoor unit, which can solve the problem of difficulty in designing the arrangement of refrigerant transmission pipes of the air-conditioning indoor unit, thereby improving the installation efficiency of the distributor and the refrigerant transmission pipes.

[0005] In a first aspect, an embodiment of the present application provides an air conditioner indoor unit, the air conditioner indoor unit comprising:

[0006] A box body, the box body including side panels;

[0007] an evaporator, the evaporator being disposed in the box, and a piping area being formed between one side of the evaporator and the side plate;

[0008] a refrigerant transmission pipe, the refrigerant transmission pipe being disposed in the box and communicating with the evaporator;

[0009] a distributor, the distributor being disposed in the housing and located in the piping area and connected to the refrigerant connecting pipe located in the piping area; and

[0010] An expansion valve is provided in the housing and is located outside the piping area so as to be spaced apart from and communicate with the distributor.

[0011] In some embodiments, the air conditioner indoor unit further includes a supporting member and a water pump, the supporting member is disposed 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.

[0012] In some embodiments, the box body further includes a top plate connected to the side plates, 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.

[0013] In some embodiments, 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 the surface of the supporting portion facing away from the top plate, the connecting portion is bent and connected to the supporting portion, and the end of the connecting portion away from the supporting portion is connected to the top plate.

[0014] In some embodiments, 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.

[0015] In some embodiments, the side panel is provided with a plug-in fastener, the enclosure includes a limiting sub-plate facing the side panel, the junction of the limiting sub-plate and the base plate forms a holding opening, and the plug-in fastener is inserted into the holding opening to abut against the limiting sub-plate.

[0016] In some embodiments, the side panel 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:

[0017] A fastener passes through the second connecting hole and the first connecting hole in sequence to fix the side plate and the limiting sub-plate.

[0018] In some embodiments, the connecting portion includes a connecting plate and an abutment plate, 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.

[0019] In some embodiments, the evaporator includes 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 part includes a grounding plate, the grounding plate is connected to the connecting plate, and the grounding plate and the side plate are detachably connected.

[0020] In some embodiments, the support portion and the connection portion are connected at a joint with a smooth transition;

[0021] And / or, the supporting portion and the connecting portion are integrally provided;

[0022] And / or, a boss is provided on a surface of the support portion facing away from the top plate, and the boss is arranged opposite to the water pump.

[0023] In some embodiments, the air conditioner indoor unit further includes a water level switch component, and the supporting member further includes an extension portion, which is connected to one side of the supporting portion and extends toward the outside of the supporting portion, and the water level switch component is detachably connected to the extension portion.

[0024] In some 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 a side of the extension plate facing away from the support portion;

[0025] The water level switch component includes a detection portion and a sliding portion connected to each other, and the mounting plate is slidably connected to the sliding portion.

[0026] In some embodiments, 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 portion when the sliding portion slides.

[0027] In some embodiments, the sliding portion further defines a limiting hole, the mounting plate is provided with a limiting protrusion, and when the sliding portion slides into place, the limiting hole and the limiting protrusion are adapted to be plugged in.

[0028] In some embodiments, the air conditioner indoor unit further includes a sound-absorbing component, and the sound-absorbing component is wrapped around the outside of the expansion valve.

[0029] In some embodiments, the evaporator includes 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 also includes an evaporation body, which is obliquely arranged in the box body, and the evaporation body is connected to the refrigerant transmission pipe, and the side plate is connected to the side wall surface of the evaporation body.

[0030] In some embodiments, the air conditioner indoor unit further includes a motor, the motor is disposed in the box, and the expansion valve is located below the motor.

[0031] In a second aspect, an embodiment of the present application further provides a HVAC system, comprising an air-conditioning outdoor unit and the air-conditioning indoor unit as described above, wherein the air-conditioning indoor unit and the air-conditioning outdoor unit form a refrigerant cycle.

[0032] In the air conditioner indoor unit and HVAC system of the present application, when the distributor is located in the piping area between the side panel of the housing and the side of the evaporator, the expansion valve is located outside the piping area so as to be spaced apart from and connected to the distributor. This separate arrangement of the expansion valve and the distributor within the housing helps reduce interference with the installation of the refrigerant transmission pipe, optimizes the overall internal layout of the air conditioner indoor unit, and provides more space around the distributor for the installation of the refrigerant transmission pipe. This makes the design of the refrigerant transmission pipe more flexible and easier to implement, reduces the technical requirements for the design of the refrigerant transmission pipe, and thus solves the problem of difficulty in designing the refrigerant transmission pipe of the air conditioner indoor unit, thereby 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

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0034] FIG1 is a schematic diagram of a partial structure of an indoor unit of an air conditioner according to the present application from the perspective of an installed state;

[0035] FIG2 is a schematic diagram of the partial structure of the air conditioner indoor unit of the present application from another perspective;

[0036] FIG3 is a schematic diagram of the structure of the air conditioner indoor unit of the present application after the side panels and top panel are removed;

[0037] FIG4 is a structural diagram of the air conditioner indoor unit of the present application from the perspective of the installed state after the side panels and top panel are removed;

[0038] FIG5 is a schematic structural diagram of a water pump, a supporting member, and an expansion valve of an indoor unit of an air conditioner according to the present invention;

[0039] FIG6 is a schematic diagram of the assembly structure of the support member and the box body of the air conditioner indoor unit of the present application;

[0040] FIG7 is a partial enlarged view of point A in FIG6;

[0041] FIG8 is a schematic structural diagram of a support member and a water level switch member of an indoor unit of an air conditioner of the present application;

[0042] FIG9 is a structural diagram of the support member and the water level switch of the air conditioner indoor unit of the present application from another perspective;

[0043] FIG10 is a schematic diagram of the assembly structure of the support structure and the water level switch component of the air conditioner indoor unit of the present application.

[0044] Explanation of the accompanying reference numerals: 100, air conditioner indoor unit; 10, housing; 11, side panel; 111, fastener; 112, first connecting hole; 12, bottom plate and top plate; 13, baffle; 20, evaporator; 21, side panel; 22, evaporation body; 221, refrigerant pipe loop; 30, refrigerant transmission pipe; 40, distributor; 50, expansion valve; 60, supporting member; 61, supporting portion; 611, base plate; 612, enclosure; 6121, limit sub-plate; 612a, second connecting hole; 6 13. Boss; 614. Clamping port; 62. Connecting portion; 621. Connecting plate; 622. Abutting plate; 623. Grounding plate; 63. Extension portion; 631. Extension plate; 632. Mounting plate; 6321. Clearance notch; 6322. Position-limiting protrusion; 70. Water pump; 80. Fastener; 90. Water level switch; 91. Detection portion; 92. Sliding portion; 921. Position-limiting hole; 922. Abutting block; 90a. Refrigerant inlet pipe; 90b. Refrigerant outlet pipe.

[0045] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0047] When the following description refers 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. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0048] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects 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 skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0050] One aspect of the present application proposes a HVAC system. In an embodiment of the present application, the HVAC system includes but is not limited to equipment such as air conditioners, multi-split units, and heat pumps, and can be used in large-scale places such as shopping malls and office buildings. The HVAC system may include an air-conditioning indoor unit, an air-conditioning outdoor unit, and a connecting pipe. The air-conditioning indoor unit is connected to the air-conditioning outdoor unit through the connecting pipe so that the air-conditioning indoor unit and the air-conditioning outdoor unit form a refrigerant circulation. In some actual use scenarios, the air-conditioning indoor unit of the present application can be installed indoors, the air-conditioning outdoor unit is responsible for cooling or heating, and transports the refrigerant through the connecting pipe. The refrigerant exchanges heat with the indoor air and the outdoor air respectively, and the air-conditioning indoor unit is responsible for transporting cold air or hot air to the room to achieve the effect of cooling or heating.

[0051] The air conditioner indoor unit may include, but is not limited to, a duct unit, a wall-mounted air conditioner indoor unit, a vertical air conditioner indoor unit, or a ceiling unit, etc.

[0052] The distributor and expansion valve in an air conditioner's indoor unit are two key components that play a vital role in the air conditioning system. The expansion valve controls the refrigerant flow, expanding the high-pressure, high-temperature refrigerant to a low-pressure, low-temperature state. The distributor then distributes the low-pressure, low-temperature refrigerant to the connected evaporator units. However, existing expansion valves are located close to the distributor, resulting in a crowded space near the distributor and making the design of the refrigerant transmission pipes connected to the distributor difficult.

[0053] To address the above issues, referring to Figures 1 to 3 , the present application further provides an air conditioner indoor unit 100. In an embodiment of the present application, the air conditioner indoor unit 100 includes a housing 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 outer shell of the air-conditioning indoor unit 100, and the box body 10 can be set in a rectangular parallelepiped shape. The evaporator 20, the refrigerant transmission pipe 30, the distributor 40 and the expansion valve 50 are arranged in the box body 10. The box body 10 provides protection and isolation for various components in the air-conditioning indoor unit 100, ensuring the safety and stability of the air-conditioning indoor unit 100. The box body 10 can be made of metal materials such as aluminum alloy or stainless steel to meet the requirements of high strength and corrosion resistance, or the box body 10 can also be made of plastic material to achieve lightweight, which is not limited in this application. The box body 10 can specifically include a top plate 12, a side plate 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. The two baffles 13 are connected to opposite sides of the side panels 11, protecting the sides of the air conditioner indoor unit 100. The opposite positions of the side panels 11 form air outlets. The cover panel is connected to the side panels 11 and the two baffles 13 and is positioned opposite the top panel 12. When the air conditioner indoor unit 100 is installed indoors, the top panel 12 is located at the top of the air conditioner indoor unit 100, and the cover panel is located on the ceiling to serve as a decorative panel. The top panel 12, side panels 11, the two baffles 13, and the cover panel can be connected by means of clamping, riveting, welding, bolting, etc., which will not be described in detail in this application.

[0055] Air flows through the evaporator 20, exchanging heat with the refrigerant in the evaporator 20 to cool the air. A piping area is formed between one side of the evaporator 20 and the side panel 11. It should be noted that the piping area between the side of the evaporator 20 and the side panel 11 is not limited to the space directly opposite the side of the evaporator 20 and the side panel 11. It can also refer to the rectangular space bounded by the upper and lower ends and the left and right ends of the side of the evaporator 20 and facing the side panel 11.

[0056] There are multiple refrigerant transmission pipes 30, one end of each of which is connected to the input ports of the multiple refrigerant pipe circuits 221 of the evaporator 20. The distributor 40 has a liquid inlet and multiple liquid outlets, and the other ends of each of the multiple refrigerant transmission pipes 30 are connected to the multiple liquid outlets. The expansion valve 50 can be an electronic expansion valve, a thermal expansion valve, or an electric ball valve. The expansion valve 50 is located outside the piping area and is spaced apart from and connected to the distributor 40. It is understood that the expansion valve 50 and the liquid inlet of the distributor 40 are connected by a pipeline, and the expansion valve 50 is also connected to the refrigerant input pipe 90a to expand the high-pressure and high-temperature refrigerant, such as the refrigerant, into a low-pressure and low-temperature state.

[0057] According to the air conditioning indoor unit 100 and HVAC system of the present application, when the distributor 40 is located in the piping area between the side panel 11 of the housing 10 and a side edge of the evaporator 20, the expansion valve 50 is located outside the piping area so as to be spaced apart from and in communication with the distributor 40. This separate arrangement of the expansion valve 50 and the distributor 40 within the housing 10 helps reduce interference with the installation of the refrigerant transmission pipe 30, optimizes the overall internal layout of the air conditioning indoor unit 100, and provides more space around the distributor 40 for the installation of the refrigerant transmission pipe 30. This makes the design of the refrigerant transmission pipe 30 more flexible and easier to implement, reduces the technical requirements for the design of the refrigerant transmission pipe 30, and thus solves the problem of difficulty in designing the refrigerant transmission pipe 30 of the air conditioning indoor unit 100, improves the installation efficiency of the distributor 40 and the refrigerant transmission pipe 30, and enhances the reliability and maintainability of the air conditioning indoor unit 100.

[0058] The air conditioner indoor unit 100 may also include a motor (not shown), a wind rotor (not shown), and a noise-reducing component (not shown). The motor and wind rotor are both located within the housing 10. The motor is used to drive the wind rotor to rotate, thereby driving airflow out of the air outlet to cool the indoor air. The noise-reducing component is wrapped around the outside of the expansion valve 50 and may be made of sound-reducing cotton or foam. This noise-reducing component reduces the operating noise of the expansion valve 50. Since the expansion valve 50 is located outside the piping area, the noise-reducing component can be wrapped around the expansion valve 50 independently without being affected by the distributor 40. Furthermore, in the prior art, when the air conditioner indoor unit 100 is installed, the space above the motor is typically wasted. However, in the present application, the expansion valve 50 is located above the motor. This fully utilizes the space above the motor, not only providing more space around the distributor 40 for the refrigerant transmission pipe 30, but also avoiding the increase in the size of the housing 10 that would result from the separate placement of the expansion valve 50 and the distributor 40, thereby improving the space utilization within the housing 10.

[0059] Referring 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. The water pump 70 is used to pump condensed water from the evaporator 20 into a drain pipe to prevent water accumulation within the housing 10, which could lead to bacterial growth, mold growth, or other health issues. The support member 60 can be made of a metal material such as aluminum alloy or stainless steel to meet requirements for high strength and corrosion resistance, or it can be made of a plastic material for lightweight construction, although this is not a limitation of the present application. The support member 60 is disposed within the housing 10, and the water pump 70 is connected to the support member 60. The water pump 70 and the expansion valve 50 are located on opposite sides of the support member 60. When the air conditioner indoor unit 100 is installed, the support member 60 creates a space above the water pump 70 for accommodating the expansion valve 50. This not only provides more space around the distributor 40 for the refrigerant transmission pipe 30, but also prevents the housing 10 from becoming larger in the lateral direction due to the separation of the expansion valve 50 from the distributor 40.

[0060] It is understood that the thickness direction of the housing 10 is parallel to the vertical direction, and the extension direction of the top plate of the housing 10 is the transverse direction. The expansion valve 50 can be set in a cylindrical shape, and the axial length of the expansion valve 50 is greater than the radial length. Furthermore, the axial direction of the expansion valve 50 extends along the transverse direction of the top plate 12 to improve the utilization rate of the transverse dimension of the space above the water pump 70. Compared with the method in which 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 housing 10 is reduced, and the height of the support member 60 relative to the water pump 70 can be effectively reduced, thereby reducing the dimension of the housing 10 in the thickness direction, thereby reducing the overall dimension of the air conditioner outdoor unit.

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

[0062] Furthermore, the joint between the support portion 61 and the connecting portion 62 is smoothly connected, so that the joint between the support portion 61 and the connecting portion 62 is more beautiful and is not easily scratched when the installer or user touches the joint.

[0063] Optionally, the support portion 61 and the connecting portion 62 are integrally formed. That is, the support portion 61 and the connecting portion 62 can be formed into an integral structure by stamping a single plate. This can reduce the number of components in the support member 60, making the overall structure of the support member 60 simpler and providing greater strength.

[0064] Optionally, a boss 613 is provided on the surface of the support portion 61 facing away from the top plate 12, and the boss 613 is disposed opposite the water pump 70. Since the provision of the water pump 70 increases the stress on the support portion corresponding to the water pump 70, the boss 613 is provided to improve the flexibility 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 corresponding to the water pump 70, which helps prevent deformation or damage of the support portion 61.

[0065] 4 to 6 , in some structural forms, the support portion 61 includes a base plate 611 and a panel 612. The connecting portion 62 is bent and connected to one edge of the base plate 611. The panel 612 surrounds and connects to the remaining edge of the base plate 611. The panel 612 extends along a side away from the connecting portion 62. The panel 612 is connected to the side panel 11. The base plate 611 and the panel 612 can be formed by bending the plate body. The water pump 70 is connected to the surface of the base plate 611 away from the top plate 12. The water pump 70 can be fixed to the top plate 12 in a detachable manner such as screw connection. This can ensure the connection stability between the water pump 70 and the base plate 611 and improve the disassembly and assembly efficiency of the water pump 70 and the base plate 611. The enclosure 612 not only serves as a positioning connection with the side panel 11, but also surrounds and connects to the remaining edge of the base plate 611 except the connection part 62, which not only improves the overall strength of the support part 61, but also serves to limit the water pump 70 before the water pump 70 and the base plate 611 are installed, so that the water pump 70 is not easy to fall off the base plate 611 when placed on the base plate 611, thereby improving the safety of the connection between the water pump 70 and the support part 61.

[0066] With reference to Figures 6 to 8 , the side panel 11 is further provided with a latch 111. The enclosure 612 includes a retaining sub-plate 6121 facing the side panel 11. A retaining opening 614 is formed at the junction of the retaining sub-plate 6121 and the base 611. The latch 111 is inserted into the retaining opening 614 to abut the retaining sub-plate 6121. The latch 111 may be a plate-like structure protruding from the surface of the side panel 11 facing the bracket member. During installation, the latch 111 passes through the retaining opening 614 and abuts the surface of the retaining sub-plate 6121 facing away from the side panel 11, thereby laterally retaining the retaining sub-plate 6121 and limiting its lateral movement in the box body 10. This ensures that the enclosure 612 and the side panel 11 remain fixed in the lateral direction of the box body 10, thereby ensuring convenient connection between the side panel 11 and the retaining sub-plate 6121 in the vertical direction of the box body 10. By using the design of the plug-in fastener 111 , the limiting sub-plate 6121 and the retaining opening 614 , the limiting sub-plate 6121 and the side plate 11 can be pre-fixed quickly, simply and reliably in the transverse direction of the box body 10 .

[0067] Furthermore, the side panel 11 has a first connection hole 112, and the position-limiting sub-plate 6121 has a second connection hole 612a corresponding to the first connection hole 112. The air conditioner indoor unit 100 also includes a fastener 80, which passes through the second connection hole 612a and the first connection hole 112, respectively, to secure the side panel 11 to the position-limiting sub-plate 6121. The first connection hole 112 and the second connection hole 612a can be threaded holes, and the fastener 80 can be a screw. The screws secure the side panel 11 to the position-limiting sub-plate 6121, ensuring vertical positional stability of the side panel 11 and the position-limiting sub-plate 6121 within the housing 10. This securing method is relatively simple to install and easy to disassemble, facilitating subsequent maintenance.

[0068] 4 , 5 and 9 , in some structural forms, the connecting portion 62 includes a connecting plate 621 and an abutting plate 622, wherein the connecting plate 621 is connected between the supporting portion 61 and the abutting plate 622, and the connecting plate 621 is arranged relative to the side plate 11, and the abutting plate 622 is detachably connected to the top plate 12 of the box body 10. The plate-like structure of the connecting plate 621 reduces the space occupied by the connecting portion 62 in the box body 10. The abutting plate 622 can be arranged to fit the top plate 12, thereby increasing the contact area between the connecting portion 62 and the top plate 12, thereby improving the connection stability between the connecting portion 62 and the top plate 12. It should be noted that the abutting plate 622 can be fixed to the top plate 12 by means of screw connection or snap fasteners, so that 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 facing the support portion 61 and the top plate 12 , thereby avoiding interference with the installation of the expansion valve 50 .

[0069] Furthermore, the evaporator 20 includes an evaporator body 22 and side plates 21. To enhance the heat exchange capacity of the evaporator 20, the evaporator body 22 is tilted within the housing 10. Specifically, taking the thickness of the housing 10 as an example (e.g., vertically), the top of the evaporator 20 is rotated downward by a certain angle around the bottom of the evaporator 20, thereby forming an inclined arrangement. It is understood that, given a given thickness of the housing 10, designing the evaporator body 22 as tilted can increase the area of ​​the evaporator body 22, thereby increasing the heat exchange area and thus improving heat exchange efficiency. The side plates 21 are connected to the sidewalls of the evaporator body 22. The evaporator body 22 is provided with multiple refrigerant pipe loops 221, each having an input port and an output port. The input port and the output port each pass through the side plates 21, and the multiple output ports are connected to the refrigerant output pipe via pipelines, thereby establishing communication between the evaporator body 22 and the refrigerant delivery pipe 30. A piping area is formed between the side panels 21 and the side panels 11. The side panels 11 are provided with through-holes for the refrigerant inlet pipe 90a and the refrigerant outlet pipe. The side panels 21 effectively reduce the rigid contact between the sidewalls of the evaporation body 30 and the side panels 11, even if the air conditioner indoor unit 100 wobbles during transportation or installation, thereby improving the protection of the evaporation body 22. Furthermore, when the evaporation body 22 is tilted, the expansion valve 50 can be located either near the side panels 22 and the side panels 11, or above or below the evaporation body 22. This fully utilizes the space above or below the evaporation body 22, thereby providing more space around the distributor 40 for the refrigerant delivery pipe 30 and avoiding the increase in size of the housing 10 that would result from the separate placement of the expansion valve 50 and the distributor 40. This improves the space utilization within the housing 10.

[0070] The connecting portion 62 may further include a grounding plate 623 connected to the connecting plate 621. The grounding plate 623 may be detachably connected to the side plate 21 of the evaporator 20 by screws or other means. This not only further improves the stability of the support member 60, but also prevents static electricity accumulation in the evaporator 20, reduces electromagnetic interference, and provides safety protection for the evaporator 20 after the side plate 21 and the grounding plate 623 are connected.

[0071] Referring to Figures 8 to 10 , in some configurations, the air conditioner indoor unit 100 further includes a water level switch 90 . The water level switch 90 primarily monitors and controls the discharge of condensed water from the air conditioner indoor unit 100. Specifically, when the condensed water in the evaporator 20 reaches a certain level, the water level switch 90 is triggered, signaling the air conditioner indoor unit 100 to stop operating or electrically activating the water pump 70 to pump the condensed water. This prevents condensed water from overflowing, avoids indoor water leakage, and improves the safety of the air conditioner indoor unit 100. The support member 60 further includes an extension 63 , which is connected to the top of the support portion 61 and extends outward from the support portion 61. This extension 63 can be integral with the support portion 61 to enhance its structural strength. Furthermore, the extension 63 extends outward from the support portion 61 to prevent interference with the water pump 70 located on the support portion 61. The water level switch 90 is detachably connected to the extension 63 , so that the water pump 70 and the water level switch 90 can be integrated into the support member 60 at the same time, so as to facilitate electrical connection between the water pump 70 and the water level switch 90 .

[0072] Furthermore, the extension portion 63 includes an extension plate 631 and a mounting plate 632. The extension plate 631 is connected to the top of the support portion 61, and the mounting plate 632 is bent and connected to the side of the extension plate 631 away from the support portion 61. The water level switch component 90 includes a detection portion 91 and a sliding portion 92 connected to each other, and the mounting plate 632 is slidably connected to the sliding portion 92. The detection portion 91 is used to detect the water level of condensed water. The installation and disassembly of the extension portion 63 and the water level switch component 90 are achieved by slidingly connecting the mounting plate 632 to the sliding portion 92. The above-mentioned fixing method makes the installation and disassembly of the extension portion 63 and the water level switch component 90 convenient and quick. Specifically, by making the mounting plate 632 in a plate shape, a slide groove is provided on the sliding portion 92 of the water level switch component 90 for the mounting plate 632 to be slidably inserted. In addition. An abutment block 922 is provided at the end of the slide groove on the sliding portion 92. When the mounting plate 632 slides and abuts against the abutment block 922, the sliding portion 92 is restricted from sliding further, thereby ensuring the stability of the relative position between the mounting plate 632 and the sliding portion 92. Alternatively, in other embodiments, the mounting plate 632 is provided with a slide groove, and the sliding portion 92 is provided with a slider for sliding connection with the slide groove.

[0073] Optionally, a clearance notch 6321 is provided at one end of the mounting plate 632 away from the extension plate 631. The clearance notch 6321 is used to make way for the detection portion 91 when the sliding portion 92 slides. When the sliding portion 92 is in place, the wall of the clearance notch 6321 abuts against the detection portion 91. When the mounting plate 632 slides until it abuts against the wall of the clearance notch 6321, further sliding of the sliding portion 92 is restricted, thereby ensuring the stability of the relative position of the mounting plate 632 and the sliding portion 92.

[0074] Optionally, the sliding portion 92 further defines a limiting hole 921, and the mounting plate 632 is provided with a limiting protrusion 6322. When the sliding portion 92 slides into position, the limiting hole 921 and the limiting protrusion 6322 are adapted to be inserted and plugged. The limiting protrusion 6322 has a certain elasticity. When the sliding portion 92 slides on the mounting plate 632, the sliding portion 92 squeezes the limiting protrusion 6322, causing the elastic portion to be pressed, thereby allowing the water level switch 90 to slide smoothly. When the sliding portion 92 slides into position, the limiting protrusion 6322 faces the limiting hole 921 on the sliding portion 92, and the limiting protrusion 6322 recovers its elastic deformation, so that the limiting protrusion 6322 and the limiting hole 921 are adapted to be inserted and plugged, thereby restricting the sliding portion 92 from continuing to slide, thereby fixing the water level switch 90 on the mounting plate 632. When the water level switch component 90 needs to be removed, the limiting protrusion 6322 can be pressed to move the limiting protrusion 6322 away from the limiting hole 921, so that the limiting protrusion 6322 is disengaged from the limiting hole 921, so that the water level switch component 90 can be smoothly slid out, facilitating the removal of the water level switch component 90.

[0075] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

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

Claims

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

2. The air conditioning indoor unit according to claim 1, wherein: The air conditioner indoor unit further includes a supporting member and a water pump. The supporting member is disposed 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 conditioning indoor unit according to claim 2, wherein: 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 an axial direction of the expansion valve extends along a transverse direction of the top plate.

4. The air conditioning indoor unit according to claim 2, wherein: 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 the surface of the supporting portion facing away from the top plate, the connecting portion is bent and connected to the supporting portion, and the end of the connecting portion away from the supporting portion is connected to the top plate.

5. The air conditioning indoor unit according to claim 4, wherein: 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 extends along a side away from the connecting portion. The surrounding plate is connected to the side plate.

6. The air conditioning indoor unit according to claim 5, wherein: The side panel is provided with a plug-in fastener, and the enclosure includes a limiting sub-plate facing the side panel. The junction of the limiting sub-plate and the base plate forms a holding opening, and the plug-in fastener is inserted into the holding opening to abut against the limiting sub-plate.

7. The air conditioning indoor unit according to claim 6, wherein: 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 connecting hole and the first connecting hole in sequence to fix the side plate and the limiting sub-plate.

8. The air conditioning indoor unit according to claim 4, wherein: The connecting portion includes a connecting plate and an abutment plate, 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 conditioning indoor unit according to claim 8, wherein: The evaporator includes 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 includes 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, wherein: The joint between the support portion and the connection portion is smoothly transitioned; And / or, the supporting portion and the connecting portion are integrally provided; And / or, a boss is provided on 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, wherein: 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 conditioning indoor unit according to claim 11, wherein: 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 component includes a detection portion and a sliding portion connected to each other, and the mounting plate is slidably connected to the sliding portion.

13. The air conditioning indoor unit according to claim 12, wherein: An end of the mounting plate away from the extension plate is provided with a clearance notch, and the clearance notch is used to make way for the detection part when the sliding part slides.

14. The air conditioning indoor unit according to claim 12, wherein: 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 position, the limiting hole and the limiting convex portion are adapted to be plugged in.

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

16. The air conditioner indoor unit according to claim 1, wherein: The evaporator includes 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 includes an evaporation body, which is obliquely disposed in the box body and communicates with the refrigerant transmission pipe. The side plate is connected to the side wall surface of the evaporation body.

17. A heating and ventilation system, wherein: The invention comprises an air-conditioning outdoor unit and an air-conditioning indoor unit according to any one of claims 1 to 16, wherein the indoor unit and the outdoor unit form a refrigerant cycle.

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