Indoor unit and heating and ventilation equipment

Abstract

The utility model provides an indoor unit and heating and ventilation equipment. The indoor unit comprises a shell assembly, an evaporator assembly, a piping assembly, a sealing assembly and a sensor. An inner cavity is formed in the shell assembly; the evaporator assembly and the piping assembly are both arranged in the inner cavity, the piping assembly is connected to the evaporator assembly, the piping assembly is provided with a plurality of welded junctions, and the evaporator assembly is provided with an end plate close to the welded junctions; the sealing assembly surrounds the part of the evaporator assembly, the sealing assembly abuts against the shell assembly, the end plate, the sealing assembly and the shell assembly jointly define a cavity, and the multiple welded junctions are located in the cavity; the sensor is arranged in the cavity and used for detecting whether refrigerants leak at the welded junctions or not. The indoor unit is high in use safety.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an indoor unit and a heating, ventilation and air conditioning device using the indoor unit. Background Technology

[0002] Currently, to meet environmental protection requirements and reduce the greenhouse effect, air conditioning systems primarily use refrigerants with low Global Warming Potential (GWP) values. However, refrigerants with low GWP values ​​are flammable. Therefore, to prevent safety accidents such as explosions due to refrigerant leaks, appropriate sensors are installed to detect refrigerant leaks.

[0003] In related technologies, the indoor unit includes a casing, an evaporator, and a piping assembly connected to the evaporator. The evaporator and the piping assembly are both located inside the casing. An accommodating space is formed between the end plate of the evaporator and the casing. Some piping assemblies and their weld joints are located within the accommodating space. Since refrigerant leakage is prone to occur at the weld joints, the sensor is also located within the accommodating space.

[0004] However, the aforementioned storage space is connected to other areas. If the refrigerant leaks, it may escape to other areas, potentially causing explosions and other safety accidents, thus reducing the overall safety of the air conditioner. Utility Model Content

[0005] This application provides an indoor unit and HVAC equipment that, in the event of a refrigerant leak, can to some extent prevent the refrigerant from escaping to other areas, thereby improving the overall safety of the HVAC equipment provided in this application.

[0006] On one hand, this application provides an indoor unit, including a housing assembly, an evaporator assembly, a piping assembly, a sealing assembly, and a sensor; the housing assembly forms an inner cavity; the evaporator assembly and the piping assembly are both disposed within the inner cavity, the piping assembly is connected to the evaporator assembly, the piping assembly has multiple weld joints, the evaporator assembly has an end plate disposed near the multiple weld joints; the sealing assembly surrounds a portion of the evaporator assembly and presses against the housing assembly, the end plate, the sealing assembly, and the housing assembly together form a chamber, the multiple weld joints are located within the chamber; the sensor is disposed within the chamber, and the sensor is used to detect whether there is refrigerant leakage at the multiple weld joints.

[0007] As an alternative implementation, the sealing assembly includes a plurality of sealing plates surrounding the evaporator assembly.

[0008] As an alternative implementation, the outer casing assembly includes a housing and an insulation structure, with the housing forming an inner cavity; the insulation structure is connected to a portion of the inner wall of the inner cavity, and a sealing assembly is pressed against the insulation structure.

[0009] As an optional implementation, the sealing assembly includes a first sealing plate group, a second sealing plate group, and a third sealing plate group; the first sealing plate group is disposed between the second sealing plate group and the third sealing plate group, the evaporator assembly has two evaporation surfaces arranged opposite to each other, and the second sealing plate group and the third sealing plate group are respectively disposed on the two evaporation surfaces; the first sealing plate group, the second sealing plate group, and the third sealing plate group are all pressed against the insulation cotton structure.

[0010] As an optional implementation, the evaporator assembly includes two evaporators at an angle to each other. Each evaporator has an evaporator end plate located near multiple weld joints. The two evaporator end plates are connected by a connecting end plate, and the two evaporator end plates and the connecting end plate together form an end plate. The two evaporators are connected at their closest points by a connecting plate. The first sealing plate assembly includes a sealing plate, which is integrally formed with the connecting plate and presses against the insulation cotton structure.

[0011] As an optional implementation, the connecting plate includes two sub-connecting plates at an angle to each other, the two sub-connecting plates being arranged and connected to the two evaporators one by one; each sub-connecting plate is formed with a sealing plate, the sealing plate being perpendicular to the corresponding connected sub-connecting plate.

[0012] As an optional implementation, the housing includes a first enclosure and a second enclosure connected together, the first enclosure being disposed opposite to the end plate, and the second enclosure being located on the side of the evaporator assembly; the insulation cotton structure includes a first insulation cotton and a second insulation cotton, the first insulation cotton being connected to the inner wall surface of the first enclosure, and the second insulation cotton being connected to the inner wall surface of the second enclosure; a first sealing plate assembly pressing against the first insulation cotton, a second sealing plate assembly pressing against the first insulation cotton and the second insulation cotton, and a third sealing plate assembly pressing against the first insulation cotton.

[0013] As an alternative implementation, the piping assembly includes a refrigerant pipe; the second and / or third sealing plate assembly has perforations formed for the refrigerant pipe to pass through.

[0014] As an alternative implementation, the shape of the perforation is adapted to the contour shape of the refrigerant pipe.

[0015] As an optional implementation, the second sealing plate assembly includes a plurality of first sub-sealing plates spliced ​​together; a portion of the perforation is formed on one of two adjacent first sub-sealing plates, and another portion of the perforation is formed on the other of two adjacent first sub-sealing plates.

[0016] As an optional implementation, the first sub-sealing plate includes a first sealing sub-plate and a first sealing flange connected together; the first sealing sub-plate is connected to the first sealing sub-plate in an adjacent first sub-sealing plate or to the evaporator assembly; the first sealing flange presses against the insulation cotton structure.

[0017] As an optional implementation, the first sealing flange includes a sealing section and a reinforcing section connected together; the sealing section is connected to the first sealing sub-plate, and the reinforcing section and the sealing section have an included angle.

[0018] As an optional implementation, the second sealing plate assembly includes a first sub-plate, a third sub-plate, and a fourth sub-plate connected together; the first sub-plate is connected to the side of the third sub-plate and the fourth sub-plate near the impeller assembly, the third sub-plate is located on the side of the evaporator assembly, and the fourth sub-plate is connected to the side of the third sub-plate away from the end plate; the first sub-plate, the third sub-plate, and the fourth sub-plate together form a first clearance space, and portions of the multiple weld joints are accommodated within the first clearance space.

[0019] As an alternative implementation, a second clearance space is formed on the third sealing plate assembly, and the end of the refrigerant pipe extends into the second clearance space.

[0020] As an alternative implementation, the third sealing plate assembly includes a second sub-sealing plate and a protrusion connected together; the second sub-sealing plate is connected to the evaporator assembly and presses against the insulation cotton structure, and perforations are formed in the second sub-sealing plate; a second clearance space is formed in the protrusion.

[0021] As an optional implementation, the second sub-sealing plate includes a second sealing sub-plate and a second sealing flange connected together; the evaporator assembly and the protrusion are both connected to the second sealing sub-plate, and the second sealing flange presses against the insulation cotton structure.

[0022] On the other hand, this application also provides a heating and ventilation device, including an outdoor unit and the aforementioned indoor unit.

[0023] In the indoor unit and HVAC equipment provided in this application, the sealing component surrounds a portion of the evaporator component and presses against the outer casing component. The sealing component, the end plate, and the outer casing component together form an independent chamber, and multiple weld joints are accommodated in this chamber.

[0024] This configuration, compared to related technologies, effectively isolates the original containment space from other spatial areas, ensuring that even if refrigerant leaks at the weld joint, it is confined within the closed cavity, reducing the risk of leaked refrigerant escaping to other areas. This reduces the likelihood of safety accidents such as explosions and improves the safety of the HVAC equipment provided in this application.

[0025] Meanwhile, placing the sensor in this enclosed cavity avoids interference caused by spatial connectivity, thereby improving the accuracy and timeliness of the sensor's refrigerant leak detection. This facilitates remedial measures after a refrigerant leak in the indoor unit, thus strengthening the indoor unit and HVAC equipment's ability to prevent and control safety hazards. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the indoor unit provided in an embodiment of this application;

[0028] Figure 2 An exploded view of a first partial structure of the indoor unit provided in an embodiment of this application;

[0029] Figure 3 for Figure 1 A cross-sectional view along the AA direction;

[0030] Figure 4 for Figure 3 Enlarged schematic diagram of the local structure at point B;

[0031] Figure 5 This is a schematic diagram of the second partial structure of the indoor unit provided in the embodiments of this application;

[0032] Figure 6 A schematic diagram of the third partial structure of the indoor unit provided in an embodiment of this application;

[0033] Figure 7 A schematic diagram of the fourth partial structure of the indoor unit provided in an embodiment of this application;

[0034] Figure 8 This is a three-dimensional structural diagram of the second sealing plate assembly in the indoor unit provided in an embodiment of this application;

[0035] Figure 9 An exploded view of the second sealing plate assembly in the indoor unit provided in the embodiments of this application;

[0036] Figure 10 This is a three-dimensional structural diagram of the third sealing plate assembly in the indoor unit provided in an embodiment of this application;

[0037] Figure 11 An exploded view of the third sealing plate assembly in the indoor unit provided in an embodiment of this application.

[0038] Explanation of icon numbers:

[0039] 1. Housing assembly; 2. Evaporator assembly; 3. Piping assembly; 4. Sealing assembly; 5. Chamber; 6. Sensor;

[0040] 10. Indoor unit; 11. Inner cavity; 12. Shell; 13. Insulation cotton structure; 21. End plate; 22. Evaporator; 23. Evaporating surface; 24. Connecting end plate; 25. Connecting plate; 31. Weld joint; 32. Refrigerant pipe; 33. Electronic expansion valve; 34. Filter; 41. First sealing plate assembly; 42. Second sealing plate assembly; 43. Third sealing plate assembly; 44. Perforation;

[0041] 111. Heat exchange chamber; 112. Fan wheel chamber; 121. First enclosure plate; 122. Second enclosure plate; 123. Third enclosure plate; 131. First insulation cotton; 132. Second insulation cotton; 221. Evaporator end plate; 222. Heat exchanger body; 251. Sub-connecting plate; 311. Output pipe weld; 312. Expansion valve weld; 313. Filter weld; 411. Sealing plate; 421. First sub-sealing plate; 431. Second clearance space; 432. Second sub-sealing plate; 433. Protrusion; 441. First perforation section; 442. Second perforation section;

[0042] 1231, Air Inlet; 1232, Air Outlet; 421a, First Sub-Sealing Plate; 421b, First Sub-Sealing Plate; 421c, Third Sub-Sealing Plate; 421d, Fourth Sub-Sealing Plate; 4211, First Sub-Plate; 4212, Second Sub-Plate; 4213, First Connecting Flanged Edge; 4214, Second Connecting Flanged Edge; 4215, Third Connecting Flanged Edge; 4216, Third Sub-Plate; 4217, Fourth Sub-Plate; 4218, First Clearance Space; 4219, Fourth Connecting Flanged Edge; 4220, Fifth Sub-Plate; 4221, Fifth Connecting Flanged Edge; 4222, Sixth Connecting Flanged Edge; 4223, Sixth Sub-Plate; 4224, Seventh Sub-Plate; 4225, Seventh Connecting Flanged Edge; 422a, First Sealing Plate 422b, First sealing sub-plate; 422c, First sealing sub-plate; 422d, First sealing sub-plate; 423a, First sealing flange; 423b, First sealing flange; 423c, First sealing flange; 423d, First sealing flange; 424a, Sealing section; 424b, Sealing section; 425a, Reinforcing section; 425b, Reinforcing section; 4321, Second sealing sub-plate; 4322, Second sealing flange; 4323, Clearance notch; 4324, Eighth connecting flange; 4325, Ninth connecting flange; 4326, Insert post; 4331, First connecting section; 4332, Second connecting section; 4333, Third connecting section; 4334, Opening; 4335, Connecting piece.

[0043] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0045] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0046] In the field of air conditioning technology, to reduce the greenhouse effect caused by air conditioning use, most refrigerants are generally low Global Warming Potential (GWP) refrigerants, such as R32. Low GWP refrigerants are often flammable, and leaks could potentially lead to explosions and other serious safety accidents.

[0047] In related technologies, a space is provided between the evaporator end plate and the outer casing of the indoor unit, where some piping components and their weld joints are located. Sensors are also installed within this space to detect refrigerant leaks. However, this space is connected to other areas, making it easy for refrigerant leaks to spread to other areas, significantly reducing the overall safety of the air conditioner.

[0048] Based on this, the present application provides an indoor unit and HVAC equipment that can prevent refrigerant from spreading to a certain extent after refrigerant leakage, thereby improving the overall safety of the HVAC equipment.

[0049] It should be noted that the HVAC equipment provided in this embodiment includes, but is not limited to, ducted air conditioning units. No specific limitations are made regarding the type of HVAC equipment provided in this embodiment.

[0050] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific implementation details.

[0051] Please combine Figures 1 to 4 , Figure 1 This is a structural schematic diagram of the indoor unit provided in an embodiment of this application. Figure 2This is an exploded view of a first partial structure of the indoor unit provided in an embodiment of this application. Figure 3 for Figure 1 Cross-sectional view along the AA direction. Figure 4 for Figure 3 A magnified view of the partial structure at point B. As shown in the figure, this embodiment provides an indoor unit 10, including a casing assembly 1, an evaporator assembly 2, a piping assembly 3, and a fan assembly (not shown in the figure).

[0052] The outer casing assembly 1 includes a casing 12, which includes a first enclosure 121 arranged opposite each other along a first direction, a second enclosure 122 arranged opposite each other along a second direction, and a third enclosure 123 arranged opposite each other along a third direction. The first enclosure 121, the second enclosure 122, and the third enclosure 123 enclose a cavity 11, which includes a heat exchange cavity 111 and a fan wheel cavity 112. An evaporator assembly 2 is disposed within the heat exchange cavity 111, and a fan wheel assembly is disposed within the fan wheel cavity 112. A piping assembly 3 is connected to the evaporator assembly 2 and is located within the heat exchange cavity 111. The first direction, the second direction, and the third direction are perpendicular to each other. Specifically, the first direction can be found in [reference needed]. Figure 2 and Figure 3 In the xx direction, the second direction can be found in [reference]. Figure 1 and Figure 2 For the YY direction, and the third direction, please refer to [link / reference]. Figures 1 to 3 The zz direction in the text.

[0053] It should be noted that the first enclosure 121 located on the same side of the evaporator assembly 2 can be one or more, and the second enclosure 122 and the third enclosure 123 located on the same side of the evaporator assembly 2 are one each.

[0054] Understandably, an air inlet 1231 should be formed on one of the third enclosures 123, and an air outlet 1232 should be formed on the other third enclosure 123. The impeller cavity 112 is located between the heat exchange cavity 111 and the air outlet 1232. Thus, when the indoor unit 10 is working normally, the impeller assembly operates, and outside air enters the heat exchange cavity 111 through the air inlet 1231 to exchange heat with the evaporator assembly 2, and then flows through the impeller cavity 112 and out through the air outlet 1232.

[0055] It should be noted that in other embodiments, the impeller cavity 112 may be located between the air inlet 1231 and the heat exchange cavity 111. That is, the impeller assembly is positioned closer to the air inlet 1231 than the evaporator assembly 2, and the evaporator assembly 2 is positioned closer to the air outlet 1232 than the impeller assembly. Here, no specific heat exchange method is limited.

[0056] The following will take the example of the impeller cavity 112 being located between the heat exchange cavity 111 and the air outlet 1232 for further explanation.

[0057] Generally, in order to improve the cooling or heating effect of the indoor unit 10, the outer casing assembly 1 also includes an insulation cotton structure 13, which is adhered to the inner wall of the inner cavity 11. By setting the insulation cotton structure 13, heat exchange between the evaporator assembly 2 and the external environment can be prevented to a certain extent, thereby improving the performance of the indoor unit 10.

[0058] Specifically, the insulation cotton structure 13 includes a first insulation cotton 131 and a second insulation cotton 132. The first insulation cotton 131 is connected to the inner wall of the first enclosure 121, and the second insulation cotton 132 is connected to the inner wall of the second enclosure 122.

[0059] Please continue to combine Figure 5 , Figure 5 This is a schematic diagram of the second partial structure of the indoor unit provided in this application embodiment. Since the piping assembly 3 includes a refrigerant pipe 32, an electronic expansion valve 33, a filter 34, and other pipes, the connections between pipes, between the electronic expansion valve 33 and a pipe, and between the filter 34 and a pipe are all made by welding. This results in the piping assembly 3 having multiple weld joints 31. Specifically, the multiple weld joints 31 may include an output pipe weld joint 311, an expansion valve weld joint 312, and a filter weld joint 313. It should be noted that the weld joints 31 are the locations where pipes meet, and the connection points between functional components and pipes.

[0060] The refrigerant pipe 32 is responsible for transporting refrigerant to enable the indoor unit 10 to perform cooling or heating functions.

[0061] The evaporator assembly 2 has an end plate 21 located near a plurality of weld joints 31, a first enclosure 121 disposed opposite to the end plate 21, and a second enclosure 122 located on the side of the evaporator assembly 2.

[0062] In some optional embodiments, to improve the cooling efficiency of the indoor unit 10, the evaporator assembly 2 may include two evaporators 22 arranged at an angle to each other, such that the evaporator assembly 2 has two evaporation surfaces 23 arranged opposite to each other. The evaporator 22 has evaporator end plates 221 arranged near multiple weld joints 31, and the two evaporator end plates 221 are connected by a connecting end plate 24. The two evaporator end plates 221 and the connecting end plate 24 together form an end plate 21. In this way, the connection between the evaporator end plates 221 of the two evaporators 22 can be realized.

[0063] The distance between the two evaporators 22 gradually decreases in the direction from the air inlet 1231 to the impeller assembly, that is, the distance between the two evaporators 22 gradually decreases in the direction from the air inlet 1231 to the air outlet 1232.

[0064] Specifically, the connection between the evaporator end plate 21 and the connecting end plate 24 can be a detachable connection using threaded fasteners such as screws. This facilitates the assembly of the evaporator assembly 2. Of course, in some other embodiments, the connection between the evaporator end plate 21 and the connecting end plate 24 can also be welding or other methods. No specific limitations are imposed here.

[0065] Of course, simply connecting the two evaporator end plates 221 together for the connection between the two evaporators 22 results in low reliability. Therefore, it is also necessary to connect the heat exchange bodies 222 of the two evaporators 22 together. Thus, in some specific embodiments, the ends of the two evaporators 22 that are close to each other can also be connected by a connecting plate 25, which can improve the connection reliability between the two evaporators 22.

[0066] As described above, since the two evaporators 22 are arranged at an angle to each other, there is also an included angle between the ends of the two evaporators 22 that are close to each other. Therefore, in this embodiment, the connecting plate 25 is composed of two sub-connecting plates 251 that are at an angle to each other, and the two sub-connecting plates 251 are respectively connected to the two heat exchange bodies 222. In this way, the layout can be optimized and the heat exchange efficiency can be improved.

[0067] It should be noted that in some embodiments, the connection between the sub-connecting plate 251 and the heat exchange body 222 can also be achieved through threaded fasteners such as screws. Therefore, no specific restrictions are placed on the connection method between the sub-connecting plate 251 and the heat exchange body 222.

[0068] In related technologies, when refrigerant leaks, there is a risk of it spreading to other spatial areas. Therefore, in order to avoid this phenomenon to a certain extent, appropriate structures can be set up to prevent the leaked refrigerant from spreading to other spatial areas.

[0069] Please continue to combine Figure 6 , Figure 6This is a schematic diagram of the third partial structure of the indoor unit provided in this embodiment. The indoor unit 10 provided in this embodiment also includes a sealing assembly 4 and a sensor 6. The sealing assembly 4 surrounds the portion of the evaporator assembly 2 and presses against the insulation cotton structure 13 of the outer shell assembly 1. The end plate 21, the sealing assembly 4, and the outer shell assembly 1 together form a chamber 5, and multiple weld joints 31 are located in the chamber 5. The sensor 6 is disposed in the chamber 5 and is used to detect whether there is refrigerant leakage at the multiple weld joints 31. The sealing assembly 4, the first enclosure 121 facing the end plate 21, and a second enclosure 122 enclose a relatively closed chamber 5. The sensor 6 can be disposed on the connecting end plate 24.

[0070] With the above configuration, the sealing component 4 is tightly pressed against the insulation cotton structure 13 and surrounds a portion of the evaporator component 2 to form a relatively closed chamber 5 to accommodate the weld joint 31. Compared with related technologies, this can effectively isolate the original accommodating space from the communication path between other spatial areas, so that even if the refrigerant leaks at the weld joint 31, it is confined within the closed chamber 5, reducing the risk of the leaked refrigerant escaping to other areas, thereby reducing the possibility of safety accidents such as explosions and improving the safety of the HVAC equipment provided in this application.

[0071] The chamber 5 contains the weld joint 31, which is prone to refrigerant leakage. The sensor 6 can accurately monitor whether there is a refrigerant leak at the weld joint 31 in real time, thus improving the detection accuracy of the sensor 6. Specifically, when a refrigerant leak occurs at the weld joint 31, the refrigerant will not spread to other spaces but will accumulate in the chamber 5. This allows the sensor 6 to detect the leak signal promptly and accurately, providing a strong guarantee for timely countermeasures and, to a certain extent, preventing safety accidents and ensuring the safe operation of the indoor unit 10.

[0072] In some embodiments, the sealing assembly 4 may include a plurality of sealing plates surrounding the evaporator assembly 2. This enhances structural stability and improves sealing performance while facilitating installation and maintenance.

[0073] The sealing component 4 will be described in detail below.

[0074] Please continue to combine Figure 7 , Figure 7This is a schematic diagram of the fourth partial structure of the indoor unit provided in this application embodiment. As shown in the figure, in some embodiments, the sealing assembly 4 includes a first sealing plate group 41, a second sealing plate group 42, and a third sealing plate group 43; the first sealing plate group 41 is disposed between the second sealing plate group 42 and the third sealing plate group 43, and the second sealing plate group 42 and the third sealing plate group 43 are respectively disposed on two evaporation surfaces 23; the first sealing plate group 41, the second sealing plate group 42, and the third sealing plate group 43 all press against the insulation cotton structure 13. In this way, the leakage path of refrigerant can be blocked from different directions, and in conjunction with the insulation cotton structure 13, the sealing performance of the chamber 5 can be enhanced, further reducing the risk of refrigerant escape and improving the operational stability and safety of the indoor unit 10 and HVAC equipment.

[0075] Specifically, the first sealing plate assembly 41 presses against the first insulation cotton 131, the second sealing plate assembly 42 presses against the first insulation cotton 131 and the second insulation cotton 132, and the third sealing plate assembly 43 presses against the first insulation cotton 131. Among them, the first insulation cotton 131 is arranged opposite to the end plate 21.

[0076] Due to the positioning of the second sealing plate assembly 42 and the third sealing plate assembly 43, in order to ensure that the arrangement of the sealing assembly 4 does not affect the routing of the piping assembly 3, in some optional embodiments, the second sealing plate assembly 42 and / or the third sealing plate assembly 43 are provided with perforations 44 for the refrigerant pipe 32 to pass through. In the specific embodiment of this example, both the second sealing plate assembly 42 and the third sealing plate assembly 43 are provided with perforations 44 for the refrigerant pipe 32 to pass through, and the shape of the perforations 44 is adapted to the contour shape of the refrigerant pipe 32. In this way, on the one hand, the normal routing of the piping assembly 3 can be satisfied, and on the other hand, the shape of the adapted perforations 44 fits tightly against the refrigerant pipe 32, which can reduce the risk of refrigerant leakage from the perforations 44, and further avoid safety accidents caused by leakage to a certain extent.

[0077] like Figure 5 and Figure 6 As shown, in a specific embodiment of this invention, due to the positional arrangement of the second sealing plate group 42 and the third sealing plate group 43 and the restriction of the refrigerant pipe 32's routing direction, the perforation 44 provided on the second sealing plate group 42 can be a through hole that matches the entire contour of the refrigerant pipe 32, while the perforation 44 provided on the third sealing plate group 43 can be a notch that matches a portion of the contour of the refrigerant pipe 32. Of course, in some other embodiments, the perforation 44 can also be of other shapes; here, no limitation is made.

[0078] Since the first sealing plate assembly 41 is positioned at the same location as the connecting plate 25, the first sealing plate assembly 41 can be formed using the shape of the connecting plate 25 in order to facilitate its installation and reduce manufacturing costs.

[0079] Based on this, in some optional embodiments, the first sealing plate assembly 41 may include two sealing plates 411, with one sealing plate 411 formed on each sub-connecting plate 25. The sealing plate 411 is integrally formed with the connecting plate 25, and the sealing plate 411 presses against the first insulation cotton 131. The sealing plate 411 is perpendicular to the corresponding connected sub-connecting plate 25. The integral forming method not only reduces manufacturing costs but also enhances structural stability and reduces the risk of leakage caused by splicing. The vertical design allows the sealing plate 411 to better press against the first insulation cotton 131, forming a tight seal, effectively preventing refrigerant leakage, and improving the operational stability and safety of the indoor unit 10.

[0080] Please continue to combine Figures 8 to 9 , Figure 8 This is a three-dimensional structural diagram of the second sealing plate assembly in the indoor unit provided in an embodiment of this application. Figure 9 This is an exploded view of the second sealing plate assembly in the indoor unit provided in this application embodiment. As shown in the figure, in some embodiments, the second sealing plate assembly 42 includes multiple first sub-sealing plates 421 spliced ​​together; a portion of the perforation 44 is formed on one of two adjacent first sub-sealing plates 421, and another portion of the perforation 44 is formed on the other of two adjacent first sub-sealing plates 421. This facilitates installation and adaptation. The splicing of multiple first sub-sealing plates 421 can flexibly accommodate different shapes of the evaporator 22, and the distribution of the perforations 44 on adjacent first sub-sealing plates 421 allows for fine-tuning according to the actual position when installing the refrigerant pipe 32, reducing installation difficulty. Simultaneously, the interlocking perforations 44, while ensuring the structural integrity of the second sealing plate assembly 42, ensure that the perforations 44 fit the contour of the refrigerant pipe 32, enhancing the sealing effect and reducing the risk of refrigerant leakage.

[0081] Specifically, the plurality of first sub-sealing plates 421 include a first sub-sealing plate 421a, a first sub-sealing plate 421b, a third sub-sealing plate 421c, and a fourth sub-sealing plate 421d, wherein the first sub-sealing plate 421b, the third sub-sealing plate 421c, and the fourth sub-sealing plate 421d are all connected to the first sub-sealing plate 421a, and the first sub-sealing plate 421b is connected to the evaporator end plate 221.

[0082] The first sub-sealing plate 421a includes a first sub-plate 4211 and a second sub-plate 4212 connected together and perpendicular to each other. The first sub-plate 4211 and the second sub-plate 4212 constitute the first sealing sub-plate 422a. The first sub-plate 4211 is connected with a first connecting flange 4213 and a first sealing flange 423a. The first sealing flange 423a is pressed together with the second insulation cotton 132.

[0083] Furthermore, the first sealing flange 423a includes a sealing section 424a and a reinforcing section 425a connected together; the sealing section 424a is connected to the first sub-plate 4211, and the reinforcing section 425a and the sealing section 424a have an included angle. Specifically, the reinforcing section 425a is arranged parallel to the first sub-plate 4211. In this way, not only can a sealed connection be achieved between the first sub-sealing plate 421a and the second insulation cotton 132, but the structural strength of the first sub-sealing plate 421a at the sealing point can also be improved, further reducing the risk of refrigerant diffusion.

[0084] The second connecting flange 4214 and the third connecting flange 4215 can be connected to the second subplate 4212. The second connecting flange 4214 can be connected to the heat exchange body 222.

[0085] Regarding the structure of the first sub-sealing plate 421b, in this embodiment, the first sub-sealing plate 421b may include a third sub-plate 4216 and a fourth sub-plate 4217 connected together and perpendicular to each other. The third sub-plate 4216 and the fourth sub-plate 4217 form the first sealing sub-plate 422b. The third sub-plate 4216 is located on the side of the evaporator assembly 2 and extends along the extension direction of the evaporation surface 23. The fourth sub-plate 4217 is connected to the side of the third sub-plate 4216 away from the end plate 21. The first sub-plate 4211 is connected to the third sub-plate 4216 and the fourth sub-plate 4217. The fourth sub-plate 4217 is connected to the first connecting flange 4213 to realize the connection between the first sub-sealing plate 421a and the first sub-sealing plate 421b.

[0086] The third sub-plate 4216, the fourth sub-plate 4217, and the first sub-plate 4211 enclose a first clearance space 4218, within which a portion of the multiple weld joints 31 are accommodated. This allows the second sealing plate assembly 42 to provide a stop in the event of refrigerant leakage at the weld joint 31.

[0087] Furthermore, the perforation 44 includes a first hole segment 441 and a second hole segment 442, wherein the first hole segment 441 is formed on the first connecting flange 4213, the second hole segment 442 is formed on the fourth sub-plate 4217, and the first hole segment 441 and the second hole segment 442 are fastened together to form the perforation 44.

[0088] In order to achieve the connection between the second sealing plate group 42 and the heat exchange body 222, in a specific embodiment of this example, a fourth connecting flange 4219 is connected to the third sub-plate 4216, and the fourth connecting flange 4219 is connected to the heat exchange body 222 by screws or other threaded fasteners.

[0089] Furthermore, in order to improve the sealing performance between the second sealing plate assembly 42 and the outer shell assembly 1, a first sealing flange 423b that is pressed against the second insulation cotton 132 can also be connected to the fourth sub-plate 4217. The first sealing flange 423b includes a sealing section 424b and a reinforcing section 425b. The sealing section 424b is connected to the fourth sub-plate 4217 and presses against the second insulation cotton 132. The reinforcing section 425b is connected to the sealing section 424b, and a part of it is parallel to the fourth sub-plate 4217, while the other part is perpendicular to the fourth sub-plate 4217.

[0090] The third sub-sealing plate 421c and the fourth sub-sealing plate 421d are both located on the side of the first sub-plate 4211 near the wind turbine assembly. The third sub-sealing plate 421c is located on the side of the fourth sub-sealing plate 421d near the wind turbine assembly. The third sub-sealing plate 421c includes a fifth sub-plate 4220, which constitutes the first sealing sub-plate 422c. The fifth sub-plate 4220 is connected to a fifth connecting flange 4221, a sixth connecting flange 4222, and a first sealing flange 423c. The fifth connecting flange 4221 and the third connecting flange 4215 are connected together by screws or other threaded fasteners. The sixth connecting flange 4222 is connected to the sub-connecting plate 251, for example, by overlapping. The first sealing flange 423c is pressed against the first insulation cotton 131.

[0091] The fourth sub-sealing plate 421d includes a sixth sub-plate 4223 and a seventh sub-plate 4224 connected together and perpendicular to each other. The sixth sub-plate 4223 and the seventh sub-plate 4224 constitute the first sealing sub-plate 422d. A seventh connecting flange 4225 is connected to the sixth sub-plate 4223. The seventh connecting flange 4225 is connected to the second sub-plate 4212. A first sealing flange 423d is connected to the seventh sub-plate 4224. The first sealing flange 423d is pressed against the first thermal insulation cotton 131.

[0092] Please continue to combine Figure 10 and Figure 11 , Figure 10 This is a three-dimensional structural diagram of the third sealing plate assembly in the indoor unit provided in an embodiment of this application. Figure 11 This is an exploded view of the third sealing plate assembly in the indoor unit provided in this embodiment. To allow the refrigerant pipe 32 to run normally, in some optional embodiments, a second clearance space 431 is formed on the third sealing plate assembly 43, and the end of the refrigerant pipe 32 extends into the second clearance space 431. This creates a relatively sealed chamber 5, preventing the diffusion of leaked refrigerant, and ensures the normal running of the piping assembly 3. This improves the performance of the indoor unit 10 provided in this embodiment.

[0093] Specifically, the third sealing plate assembly 43 includes a second sub-sealing plate 432 and a protrusion 433 connected together; the second sub-sealing plate 432 is connected to the heat exchange body 222 of the evaporator assembly 2 and presses against the first insulation cotton 131, and a perforation 44 is formed on the second sub-sealing plate 432; a second clearance space 431 is formed in the protrusion 433.

[0094] The second sub-sealing plate 432 includes a second sealing sub-plate 4321 and a second sealing flange 4322 connected together. The second sealing sub-plate 4321 abuts against the evaporation surface 23, and the extension direction of the second sealing sub-plate 4321 is consistent with the extension direction of the evaporation surface 23. The evaporator assembly 2 and the protrusion 433 are both connected to the second sealing sub-plate 4321, and the second sealing flange 4322 presses against the insulation cotton structure 13.

[0095] In some specific embodiments, the second sealing subplate 4321 has a clearance notch 4323 through which the end of the refrigerant pipe 32 passes, a protrusion 433 is connected to the clearance notch 4323, a through hole 44 is formed on the side wall of the clearance notch 4323, and two second sealing flanges 4322 are provided at intervals in the direction from the air inlet 1231 to the impeller assembly, and the two second sealing flanges 4322 are located on both sides of the clearance notch 4323.

[0096] To secure the third sealing plate assembly 43, in this embodiment, an eighth connecting flange 4324 and a ninth connecting flange 4325 are also connected to the second sealing sub-plate 4321. The eighth connecting flange 4324 is located at the end of the second sealing sub-plate 4321 near the impeller assembly and can be connected to the heat exchange body 222 or the outer casing assembly 1. The ninth connecting flange 4325 can be connected to the heat exchange body 222. Both can be detachably connected using threaded fasteners such as screws for ease of assembly.

[0097] Furthermore, the protrusion 433 includes a first connecting segment 4331, a second connecting segment 4332, and a third connecting segment 4333. Two first connecting segments 4331 are arranged opposite each other along the extending direction of the second sealing sub-plate 4321. The second connecting segments 4332 and the third connecting segment 4333 are connected between the two first connecting segments 4331 to form an opening 4334 facing the first enclosure plate 121 on the protrusion 433. To achieve the connection between the second sealing sub-plate 4321 and the protrusion 433, the two first connecting segments 4331 are located on opposite sides of the clearance notch 4323, and a connecting piece 4335 is connected to one of the first connecting segments 4331. The connection between the second sealing sub-plate 4321 and the protrusion 433 is achieved through the insertion and engagement between the connecting piece 4335 and the insertion post 4326 on the second sealing sub-plate 4321.

[0098] This embodiment also provides a heating, ventilation, and air conditioning (HVAC) device, including an outdoor unit and an indoor unit 10 as described in the above embodiments. The structure of the indoor unit 10 has been described in detail in the above embodiments and will not be repeated here.

[0099] It should be noted that the HVAC equipment provided in this embodiment should also include other components or modules, which will not be described in detail here.

[0100] In summary, the HVAC equipment provided in this embodiment, by adopting the indoor unit 10 with the above-described structure, can, to a certain extent, prevent refrigerant leakage and diffusion, thereby improving the overall safety and reliability of the HVAC equipment.

[0101] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An indoor unit, characterized in that, include: The outer casing assembly has an internal cavity; The evaporator assembly and the piping assembly are both disposed within the inner cavity. The piping assembly is connected to the evaporator assembly and has multiple weld joints. The evaporator assembly has an end plate disposed near the multiple weld joints. A sealing assembly is disposed within a portion of the evaporator assembly and presses against the outer casing assembly. The end plate, the sealing assembly, and the outer casing assembly together form a chamber, and a plurality of the weld joints are located within the chamber. as well as A sensor is disposed within the cavity, and the sensor is used to detect whether there is refrigerant leakage at the plurality of weld joints.

2. The indoor unit as described in claim 1, characterized in that, The sealing assembly includes a plurality of sealing plates surrounding the evaporator assembly.

3. The indoor unit as described in claim 1, characterized in that, The outer casing assembly includes a shell and an insulation structure, the shell forming the inner cavity; The insulation cotton structure is connected to part of the inner wall of the inner cavity, and the sealing component presses against the insulation cotton structure.

4. The indoor unit as described in claim 3, characterized in that, The sealing assembly includes a first sealing plate group, a second sealing plate group, and a third sealing plate group; The first sealing plate group is disposed between the second sealing plate group and the third sealing plate group, and the evaporator assembly has two evaporation surfaces arranged opposite to each other, with the second sealing plate group and the third sealing plate group respectively disposed on the two evaporation surfaces; The first sealing plate group, the second sealing plate group, and the third sealing plate group all press against the thermal insulation cotton structure.

5. The indoor unit as described in claim 4, characterized in that, The evaporator assembly includes two evaporators at an angle to each other. Each evaporator has an evaporator end plate located near the plurality of weld joints. The two evaporator end plates are connected by a connecting end plate. The two evaporator end plates and the connecting end plate together form the end plate. The two evaporators are connected at their closest points by a connecting plate. The first sealing plate assembly includes a sealing plate, which is integrally formed with the connecting plate, and the sealing plate presses against the thermal insulation cotton structure.

6. The indoor unit as described in claim 5, characterized in that, The connecting plate includes two sub-connecting plates that are at an angle to each other, and the two sub-connecting plates are respectively arranged and connected to the two evaporators; Each of the sub-connecting plates is formed with a sealing plate, which is perpendicular to the corresponding connected sub-connecting plate.

7. The indoor unit as described in claim 4, characterized in that, The housing includes a first enclosure and a second enclosure connected together, the first enclosure being disposed opposite to the end plate, and the second enclosure being located on the side of the evaporator assembly; The insulation cotton structure includes a first insulation cotton and a second insulation cotton, wherein the first insulation cotton is connected to the inner wall surface of the first enclosure, and the second insulation cotton is connected to the inner wall surface of the second enclosure. The first sealing plate assembly presses against the first insulation cotton, the second sealing plate assembly presses against the first insulation cotton and the second insulation cotton, and the third sealing plate assembly presses against the first insulation cotton.

8. The indoor unit as described in any one of claims 4 to 7, characterized in that, The piping assembly includes refrigerant piping; The second sealing plate assembly and / or the third sealing plate assembly have perforations formed for the refrigerant pipe to pass through.

9. The indoor unit as described in claim 8, characterized in that, The shape of the perforation is adapted to the outline of the refrigerant pipe.

10. The indoor unit as described in claim 8, characterized in that, The second sealing plate assembly includes multiple first sub-sealing plates spliced ​​together; A portion of the perforation is formed on one of the two adjacent first sub-sealing plates, and another portion of the perforation is formed on the other of the two adjacent first sub-sealing plates.

11. The indoor unit as described in claim 10, characterized in that, The first sub-sealing plate includes a first sealing sub-plate and a first sealing flange connected together; The first sealing sub-plate is connected to the first sealing sub-plate in the adjacent first sub-sealing plate or to the evaporator assembly; The first sealing flange presses against the insulation cotton structure.

12. The indoor unit as described in claim 11, characterized in that, The first sealing flange includes a sealing section and a reinforcing section connected together; The sealing section is connected to the first sealing sub-plate, and there is an angle between the reinforcing section and the sealing section.

13. The indoor unit as described in claim 8, characterized in that, The second sealing plate assembly includes a first sub-plate, a third sub-plate, and a fourth sub-plate connected together; The first sub-plate is connected to the third sub-plate and the fourth sub-plate, the third sub-plate is located on the side of the evaporator assembly, and the fourth sub-plate is connected to the side of the third sub-plate away from the end plate; The first sub-board, the third sub-board, and the fourth sub-board enclose a first clearance space, and a portion of the plurality of weld joints is accommodated within the first clearance space.

14. The indoor unit as described in claim 8, characterized in that, A second clearance space is formed on the third sealing plate assembly, and the end of the refrigerant pipe extends into the second clearance space.

15. The indoor unit as described in claim 14, characterized in that, The third sealing plate assembly includes a second sub-sealing plate and a protrusion connected together; The second sub-sealing plate is connected to the evaporator assembly and presses against the insulation cotton structure, and the perforation is formed on the second sub-sealing plate; The second clearance space is formed within the protrusion.

16. The indoor unit as described in claim 15, characterized in that, The second sub-sealing plate includes a second sealing sub-plate and a second sealing flange connected together; Both the evaporator assembly and the protrusion are connected to the second sealing sub-plate, and the second sealing flange presses against the insulation cotton structure.

17. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, It includes an outdoor unit and an indoor unit as described in any one of claims 1 to 16.

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