Air conditioner indoor unit and air conditioner system

Abstract

The utility model discloses an air conditioner indoor unit and an air conditioning system, and relates to the technical field of air conditioning equipment, the air conditioner indoor unit comprises a case, a heat exchanger, a fan assembly and a sealing block, a hollow mounting cavity is formed in the case, and the fan assembly and the heat exchanger are arranged in the mounting cavity at intervals to form an air duct; the sealing blocks are arranged on at least one side of the air channel and are configured to prevent air from leaking into the mounting cavity from the air channel. The sealing block prevents air from leaking into the mounting cavity from the air channel, the air in the air channel is effectively restrained, then the air can be forced to flow through the heat exchanger and conduct sufficient heat exchange with the heat exchanger, and therefore the heat exchange efficiency is remarkably improved, the more accurate requirement of a user for the indoor temperature is met, and the user experience is improved. And the fan assembly does not need to additionally consume energy to compensate leaked airflow. Therefore, the operation cost is reduced, and the current social trend of energy conservation and environmental protection is met.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioning equipment, and in particular to an indoor air conditioning unit and an air conditioning system. Background Technology

[0002] As an indispensable terminal device in a central air conditioning system, the core function of a fan coil unit is to cool or heat indoor air by exchanging heat between circulating air and refrigerant or heat medium, thereby maintaining the comfort of the indoor environment. In the overall structure of the fan coil unit, the return air box is responsible for effectively guiding indoor air to the coil area for heat exchange treatment, and then returning the treated air to the room, forming a complete air circulation system.

[0003] Traditional fan coil unit designs typically include main components such as a fan, heat exchanger, and air chamber. The fan drives the airflow, the heat exchanger exchanges heat with the air to regulate the temperature, and the air chamber is the space that houses the fan and heat exchanger, ensuring that the air flows in an orderly manner.

[0004] However, in traditional fan coil unit designs, a certain gap is usually set between the heat exchanger and the fan to ensure more uniform and comprehensive contact between the airflow and the heat exchanger, thereby achieving better heat exchange performance. This design creates gaps on both sides of the airflow. In actual air conditioning system applications, some airflow leaks out through these gaps, preventing sufficient heat exchange with the heat exchanger. This reduces heat exchange efficiency and, more importantly, increases system energy consumption, lowering the overall energy efficiency ratio. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide an air conditioner indoor unit and an air conditioning system that can solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Firstly, an air conditioner indoor unit is provided, comprising:

[0008] The chassis has a hollow mounting cavity inside, and air outlets and return air inlets that communicate with the mounting cavity are respectively opened on both sides of the chassis.

[0009] A heat exchanger is disposed in the mounting cavity and on the side close to the air outlet;

[0010] A fan assembly is disposed in the mounting cavity and close to the return air inlet. The fan assembly and the heat exchanger are spaced apart within the mounting cavity to form an air duct.

[0011] A sealing block is disposed on at least one side of the air duct, the sealing block being configured to prevent air from leaking out of the air duct into the mounting cavity.

[0012] As an optional implementation, the heat exchanger includes:

[0013] An upper heat exchanger is disposed on the upper side of the mounting cavity; and

[0014] The lower heat exchanger is disposed on the lower side of the mounting cavity, and the lower heat exchanger and the upper heat exchanger are disposed at an angle, with the opposite ends of the lower heat exchanger and the upper heat exchanger connected by a fixed end plate;

[0015] The first side structure of the sealing block matches the structure of the fixed end plate near the fan assembly, and the second side structure of the sealing block matches the structure of the fan assembly near the fixed end plate. The opposite sides of the sealing block are respectively connected to the fixed end plate and the fan assembly.

[0016] As an optional implementation, a positioning groove is provided in the middle of the side of the fixed end plate near the sealing block, and the width of the positioning groove gradually increases from the bottom of the groove to the opening of the groove.

[0017] The sealing block has a protruding positioning block on the middle of its first side, which matches the positioning groove in structure. The sealing block is inserted into the positioning groove through the positioning block, and the surface of the positioning block is in surface contact with the groove wall of the positioning groove.

[0018] As an optional implementation, the fixed end plate is provided with bearing portions extending along the height direction on the upper and lower sides of the positioning groove.

[0019] The sealing block is provided with abutment platforms on the upper and lower sides of the positioning block, which are adapted to the structure of the bearing part. The two abutment platforms are respectively matched with the two bearing parts, and the abutment platforms and the bearing parts are in surface contact and abutment.

[0020] As an optional implementation, the fixed end plate is provided with a first positioning step along the height direction and / or width direction of the chassis;

[0021] The sealing block is provided with a second positioning step whose position and structure match the first positioning step. The sealing block and the fixed end plate are positioned and engaged through the second positioning step and the first positioning step.

[0022] As an optional implementation, the sealing block also has a deformation groove extending along the height direction.

[0023] As an optional implementation, the deformation groove is configured as multiple grooves, which are respectively distributed along the height direction on the upper and lower sides of the sealing block, and the deformation grooves located on the upper and lower sides of the sealing block are arranged along the length direction.

[0024] As an optional implementation, the chassis includes a top cover that covers the upper side of the heat exchanger and the fan assembly;

[0025] The upper part of the sealing block is fixedly connected to the top cover by a fixing structure.

[0026] As an optional implementation, the chassis is also provided with a mounting plate inside the mounting cavity. The mounting plate covers the air duct and has a clearance opening that connects both sides of the air duct.

[0027] The fan assembly is installed on the side of the mounting plate away from the heat exchanger, the first side of the sealing block abuts against the heat exchanger, and the second side of the sealing block abuts against the mounting plate.

[0028] In a second aspect, an air conditioning system is provided, including the indoor unit of the air conditioner described in the first aspect.

[0029] The beneficial effects of this utility model are as follows: the indoor unit of the air conditioner has a sealing block on at least one side of the air duct formed by the heat exchanger and the fan assembly, and the sealing block prevents air from leaking out of the air duct into the installation cavity, effectively constraining the air in the air duct, thereby forcing the air to flow through the heat exchanger and fully exchanging heat with the heat exchanger, thus significantly improving the heat exchange efficiency and meeting the user's more precise needs for indoor temperature.

[0030] The presence of the sealing block reduces airflow leakage, eliminating the need for the fan assembly to consume additional energy to compensate for the leaked airflow. This means that, for the same cooling or heating effect, the indoor unit of this air conditioner can consume less electricity, thereby reducing operating costs and aligning with the current social trend of energy conservation and environmental protection.

[0031] In addition, the improved airtightness of the duct can effectively reduce the interference of external air on the airflow inside the duct, making the operation of the indoor unit of the air conditioner more stable. Attached Figure Description

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a schematic diagram of the overall structure of the indoor unit of the air conditioner according to an embodiment of the present utility model;

[0034] Figure 2 This is a schematic diagram of the internal structure of the indoor unit of the air conditioner according to an embodiment of the present utility model;

[0035] Figure 3 This is a side view of the internal structure of the indoor unit of the air conditioner according to an embodiment of the present utility model;

[0036] Figure 4 This is a top view of the internal structure of the indoor unit of the air conditioner according to an embodiment of the present utility model;

[0037] Figure 5 This is one of the schematic diagrams of the sealing block structure described in the embodiment of this utility model;

[0038] Figure 6 This is the second schematic diagram of the sealing block structure described in the embodiment of this utility model.

[0039] In the diagram: 10. Chassis; 11. Mounting cavity; 12. Air outlet; 13. Air return outlet; 14. Top cover; 141. Connecting edge; 142. Fixing structure; 15. Mounting plate; 20. Heat exchanger; 21. Upper heat exchanger; 22. Lower heat exchanger; 23. Fixing end plate; 231. Positioning groove; 232. Bearing part; 30. Fan assembly; 40. Sealing block; 41. Positioning block; 42. Abutment platform; 43. Second positioning step; 44. Deformation groove. Detailed Implementation

[0040] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model are further described in detail below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Fan coil units, as an indispensable terminal device in central air conditioning systems, have a wide range of applications, covering large public buildings such as office buildings, hotels, and shopping malls, as well as residential homes. Their core function is to cool or heat indoor air through the heat exchange process between circulating air and refrigerant or heating medium, thereby maintaining a comfortable indoor environment.

[0044] As the background technology shows, traditional fan coil unit designs typically include main components such as a fan, heat exchanger, and air cavity. The fan drives airflow, the heat exchanger exchanges heat with the air to regulate temperature, and the air cavity houses the fan and heat exchanger, ensuring orderly airflow. However, in traditional fan coil unit designs, to achieve more uniform and comprehensive contact between the airflow and the heat exchanger for better heat exchange, a certain gap is usually placed between the heat exchanger and the fan. This design creates gaps on both sides of the airflow. In practical applications of air conditioning systems, some airflow leaks out through these gaps, preventing sufficient heat exchange with the heat exchanger. This reduces heat exchange efficiency and, more importantly, increases system energy consumption, lowering the overall energy efficiency ratio.

[0045] In view of this, this embodiment provides an indoor air conditioning unit that, by setting a sealing block between the heat exchanger and the fan assembly, enables the sealing block to constrain the airflow in the duct, thereby isolating the outward airflow from the duct, thus solving a series of technical problems mentioned in the background art, such as low heat exchange efficiency and high energy consumption of the equipment.

[0046] Please refer to the instruction manual attached. Figures 1-4 The indoor unit of the air conditioner includes a casing 10, inside which a hollow mounting cavity 11 is formed. The casing 10 serves as the main structure of the indoor unit, supporting the weight of the various components and protecting them from damage by the external environment. For example, the casing 10 can prevent dust, moisture, and other impurities from entering the mounting cavity 11, thus avoiding affecting the normal operation of the components.

[0047] In addition, the design of the chassis 10 also needs to consider the issue of airflow guidance. Through the reasonable design of the air outlet 12 and return air outlet 13, as well as the air guiding structure inside the chassis 10, it can be ensured that the air can flow smoothly and improve the heat exchange efficiency.

[0048] As described above, air outlets 12 and return air inlets 13, which are connected to the mounting cavity 11, are respectively opened on both sides of the chassis 10. The air outlets 12 are used to exhaust the air after it has been processed by the heat exchanger 20 into the room, while the return air inlets 13 are responsible for drawing in the indoor air, so that air circulation is formed in the mounting cavity 11.

[0049] To facilitate a more comprehensive understanding of this embodiment, the length, width, and height of the chassis 10 are explained as follows:

[0050] The length direction of the chassis 10 refers to the direction of the longest dimension of the chassis 10. The length direction of the chassis 10 is usually the direction in which the chassis 10 extends from front to back. Since the air outlet 12 and the air return vent 13 are generally distributed in the length direction of the chassis 10 to achieve effective air circulation, this embodiment defines the airflow direction inside the chassis 10 (that is, the direction in which the air duct is set) as the length direction.

[0051] The height direction of the chassis 10 refers to the direction from the bottom to the top of the chassis 10. Based on the above definition of the airflow direction inside the chassis 10 as the length direction, the height direction of the chassis 10 in this embodiment is defined as the direction that is parallel to the thickness direction of the chassis 10 and perpendicular to the length direction.

[0052] The width direction of the chassis 10 refers to the direction of the chassis 10 from left to right or from right to left. When the length direction of the chassis 10 is parallel to the horizontal plane, the width direction of the chassis 10 is on the same horizontal plane as the length direction and perpendicular to each other, while the height direction of the chassis 10 is perpendicular to the horizontal plane.

[0053] Based on the above structural foundation, the indoor unit of the air conditioner provided in this embodiment also includes a heat exchanger 20, which is disposed in the mounting cavity 11 and close to the air outlet 12, and is used to cool or heat the indoor air.

[0054] Typically, the heat exchanger 20 contains refrigerant pipes (usually copper pipes). The refrigerant flows within these pipes, absorbing or releasing heat through phase changes (such as liquid to gas or gas to liquid). Simultaneously, indoor air flows over the surface of the heat exchanger 20, exchanging heat with the refrigerant. During cooling, the refrigerant absorbs heat from the indoor air, causing the air temperature to drop; during heating, the refrigerant releases heat to the indoor air, causing the air temperature to rise. Furthermore, the heat exchanger 20 is equipped with multiple fins. These fins are spaced apart to form airflow channels, and each fin is connected to a copper pipe, enabling heat exchange between the fins and the copper pipe. This increases the heat exchange area between the heat exchanger 20 and the air as air flows through the airflow channels, thereby improving heat exchange efficiency.

[0055] In addition, the indoor unit of the air conditioner also includes a fan assembly 30. The fan assembly 30 is located in the mounting cavity 11 and close to the return air vent 13. The fan assembly 30 is responsible for driving the airflow and forming an airflow path so that the indoor air can enter the mounting cavity 11 through the return air vent 13 and flow through the heat exchanger 20. After exchanging heat with the heat exchanger 20, the air is finally discharged back into the indoor environment through the air outlet 12.

[0056] For example, the fan assembly 30 includes a fan wheel and a drive motor. The fan wheel is arranged along the width direction to maximize the air intake efficiency of the return air inlet 13, while the drive motor is installed in the housing 10 and connected to the fan wheel so that the fan wheel rotates under the drive of the drive motor, driving the airflow.

[0057] In the above scheme, the fan assembly 30 and the heat exchanger 20 are spaced apart in the mounting cavity 11 to form an air duct, so that the air driven by the fan assembly 30 can be evenly dispersed in the air duct and come into contact with the heat exchanger 20, thereby improving the heat exchange efficiency of the heat exchanger 20.

[0058] To address the technical issues mentioned in the background section, this embodiment also includes a sealing block 40, which is disposed on at least one side of the air duct. In specific application scenarios, the relative position of the sealing block 40 and the air duct can be determined based on the location where airflow leakage occurs in the air duct. Therefore, this embodiment does not impose strict requirements or limitations on the specific position and number of sealing blocks 40 on the air duct. As long as the sealing blocks 40 are disposed at the location where airflow leakage occurs in the air duct, they can constrain the airflow direction within the air duct, prevent air from leaking out of the air duct into the mounting cavity 11, and ensure that air can flow more efficiently from the fan assembly 30 to the heat exchanger 20.

[0059] It should be noted that when the sealing block 40 is located on at least one side of the air duct, it is actually located between the heat exchanger 20 and the fan assembly 30. In order to avoid air leakage in the air duct, the sealing block 40 can be configured to seal with the heat exchanger 20 and the fan assembly 30 respectively, so as to effectively prevent air from leaking out of the air duct into the mounting cavity 11, so that the air can be forced to flow through the heat exchanger 20. This helps to ensure that all the air passing through the heat exchanger 20 can be discharged or sent back to the room through the air outlet 12, thereby improving the cooling or heating efficiency of the air conditioning system and meeting the user's more precise needs for indoor temperature.

[0060] Furthermore, due to the presence of the sealing block 40, the airflow in the duct is properly guided, thus forming a smoother airflow path within the duct. This reduces the formation of eddies and turbulence in the mounting cavity 11 due to airflow leakage from the duct. The improved duct sealing also effectively reduces the interference of external air on the airflow within the duct, making the operation of the indoor unit of the air conditioner more stable and effectively suppressing the air resistance and noise within the indoor unit.

[0061] Meanwhile, with the airflow leakage in the duct greatly reduced, the fan assembly 30 does not need to consume additional energy to compensate for the leaked airflow. This means that, under the same cooling or heating effect, the indoor unit of the air conditioner can consume less electricity, thereby reducing operating costs and conforming to the current social trend of energy conservation and environmental protection.

[0062] In one embodiment, the sealing block 40 is typically made of a material with good elasticity and sealing performance, such as rubber or silicone. These materials can adapt to minor deformations and unevenness on the surface of the air duct to a certain extent, ensuring the sealing effect between it and the heat exchanger 20 and the fan assembly 30.

[0063] The sealing block 40 can be fixed in the mounting cavity 11 by various methods such as adhesive, snap-fit, and bolt connection. The specific method of fixing can be reasonably determined according to factors such as the material, shape and installation environment of the sealing block 40. This embodiment does not impose strict limitations or requirements here.

[0064] In one embodiment, please refer to the appendix to the specification. Figures 1-4 The heat exchanger 20 includes an upper heat exchanger 21 and a lower heat exchanger 22. The upper heat exchanger 21 is disposed on the upper side of the mounting cavity 11, while the lower heat exchanger 22 is disposed on the lower side of the mounting cavity 11. The lower heat exchanger 22 and the upper heat exchanger 21 are arranged at an angle to increase the heat exchange area of ​​the heat exchanger 20 to a certain extent, so that the air can exchange heat more fully with the heat exchanger 20 when passing through it, thereby improving the heat exchange efficiency.

[0065] Based on the split structure of the heat exchanger 20, in order to ensure that the heat exchanger 20 as a whole has more sufficient contact with the airflow, the upper heat exchanger 21 and the lower heat exchanger 22 are both extended along the width direction of the casing 10. The two ends of the upper heat exchanger 21 and the lower heat exchanger 22 in the width direction of the casing 10 are connected by a fixed end plate 23 to ensure the stability and reliability of the overall structure of the heat exchanger 20.

[0066] In some embodiments, the fixed end plate 23 is configured to be detachably connected to the upper heat exchanger 21 and the lower heat exchanger 22, so that the upper heat exchanger 21 and the lower heat exchanger 22 can be separated by removing the fixed end plate 23. This ensures both a compact structure and easy disassembly, which is beneficial for subsequent inspection and maintenance.

[0067] It should be understood that, according to the structural design of the heat exchanger 20 described above, the first side structure of the sealing block 40 matches the structure of the fixed end plate 23 near the fan assembly 30, and the second side structure of the sealing block 40 matches the structure of the fan assembly 30 near the fixed end plate 23. The opposite sides of the sealing block 40 are respectively connected to the fixed end plate 23 and the fan assembly 30. The matching of the first and second sides of the sealing block 40 with the fixed end plate 23 and the fan assembly 30 ensures a sealing fit between the sealing block 40 and the heat exchanger 20 and the fan assembly 30, preventing air leakage from the connection point between the sealing block 40 and the heat exchanger 20, and from the joint point between the sealing block 40 and the fan assembly 30.

[0068] Furthermore, as shown in Figure 3, Figures 5-6 A positioning groove 231 is provided in the middle of the side of the fixed end plate 23 near the sealing block 40. The width of the positioning groove 231 gradually expands from the bottom of the groove to the opening to form a conical or trumpet-shaped opening.

[0069] Correspondingly, a positioning block 41 with a structure matching the positioning groove 231 is provided on the middle of the first side of the sealing block 40. The sealing block 40 is inserted into the positioning groove 231 through the positioning block 41, and the surface of the positioning block 41 is in surface contact with the groove wall of the positioning groove 231. The conical or horn-shaped structure of the positioning groove 231 makes it easier for the positioning groove 231 to receive the positioning block 41, and at the same time provides a certain guiding role during the insertion process, which helps the accurate installation of the sealing block 40. It is also compatible with the matching method of the upper heat exchanger 21 and the lower heat exchanger 22, so that when the positioning block 41 is in the positioning groove 231, since the heat exchanger 20 is set at an angle, the positioning block 41 will not interfere with the upper heat exchanger 21 and the lower heat exchanger 22.

[0070] In addition to being easy to install and accurately positioned, the positioning block 41 is inserted into the positioning groove 231 and has a face-to-face contact fit, which can also prevent the sealing block 40 from loosening or falling off during use. The pressure is evenly transmitted between the positioning block 41 and the positioning groove 231, ensuring the stability of the sealing performance.

[0071] As can be seen from the above, since the airflow mainly collides with the heat exchanger 20, the airflow leakage in the duct is mainly concentrated at the end closest to the heat exchanger 20. Therefore, in order to minimize the airflow leakage problem at the end of the duct closest to the heat exchanger 20, such as... Figure 3 , Figures 5-6 As shown, in this embodiment, based on the above embodiment, a bearing portion 232 extending along the height direction is further provided on the upper and lower sides of the fixed end plate 23 located in the positioning groove 231. It can be understood that most of the structure of the bearing portion 232 is arranged along the height direction to balance the pressure borne by this part when it contacts the sealing block 40. However, in some embodiments, it is also possible that part of the structure of the bearing portion 232 is set as a stepped structure, so as to further stabilize the positioning accuracy of the sealing block 40 and the fixed end plate 23 by setting a stepped structure on the bearing portion 232 in conjunction with the positioning groove 231.

[0072] In this embodiment, the load-bearing part 232 is the part of the fixed end plate 23 that is mainly used to bear and transmit loads. It usually has sufficient strength and rigidity to ensure that it can remain stable when under force (pressed by the sealing block 40) and not undergo excessive deformation or damage.

[0073] Correspondingly, the sealing block 40 is provided with abutment platforms 42 on the upper and lower sides of the positioning block 41, which are adapted to the structure of the support part 232. The abutment platforms 42 are components of the sealing block 40 used to achieve positioning, support and sealing functions with the support part 232 on the fixed end plate 23. When the support part 232 extends along the height direction, the abutment platform 42 is also set as a planar structure extending along the height direction to form a stable abutment fit with the support part 232. The two abutment platforms 42 respectively correspond to the two support parts 232, and the abutment platforms 42 and the support parts 232 are in surface contact abutment fit. The support parts 232 on the fixed end plate 23 provide stable vertical support for the sealing block 40, ensuring accurate positioning and stable connection of the sealing block 40. This not only improves the sealing performance of the heat exchanger 20, but also enhances the stability and safety of its overall structure.

[0074] In addition, the close fit between the bearing part 232 and the abutment platform 42 forms an additional sealing layer. The surface contact and abutment reduce the possibility of fluid leakage, improve the sealing performance of the air duct, and ensure the heat exchange efficiency and energy utilization rate of the air conditioning indoor unit.

[0075] By placing the bearing portions 232 on both sides of the positioning groove 231, the load on the sealing block 40 can be distributed over a wider area, reducing local stress concentration. This helps to reduce the risk of damage to the sealing block 40 due to uneven stress. Furthermore, by increasing the number and area of ​​the bearing portions 232, the load-bearing capacity of the fixed end plate 23 on the sealing block 40 can be improved, allowing the sealing block 40 to a certain extent to withstand greater pressure against the fixed end plate 23, thereby enhancing the sealing performance between the two.

[0076] In summary, by setting the support portion 232 to be distributed on the upper and lower sides of the positioning groove 231 and extending along the height direction, it is possible to ensure that the support portion 232 is evenly arranged on the fixed end plate 23, while also setting the support portion 232 in a height direction perpendicular to the length direction of the chassis 10. This allows it to better cooperate with the abutment platform 42, so that when the sealing block 40 abuts against the support portion 232 through the abutment platform 42, the interaction force between the two can be transmitted more evenly, reducing local stress concentration and thus extending the service life of the mechanical structure.

[0077] Please continue to refer to the instruction manual appendix. Figure 3 , Figures 5-6 A structure is also provided between the fixed end plate 23 and the sealing block 40 to further improve the fitting accuracy between the two, as follows:

[0078] 1. The fixed end plate 23 is provided with a first positioning step (not shown) along the height direction of the chassis 10. Correspondingly, the sealing block 40 is provided with a second positioning step 43 that matches the position of the first positioning step. Combined with the part of the structure of the bearing part 232 mentioned above, it can be set as a step structure. In this embodiment, there are two first positioning steps, and the two first positioning steps are respectively located at the ends of the two bearing parts 232 that are far apart from each other along the height direction. The two second positioning steps 43 provided on the sealing block 40 are also correspondingly located at the ends of the abutment platform 42 that are far apart from each other along the height direction. A drop along the length direction is formed between the first positioning step and the bearing part 232 so that the second positioning step 43 can be stably engaged with the first positioning step, thereby providing stronger constraint and positioning capabilities for the fixed end plate 23 and the sealing block 40 in the height direction, and ensuring stronger sealing performance between the two.

[0079] 2. The fixed end plate 23 is provided with a first positioning step along the width direction of the chassis 10. Correspondingly, the sealing block 40 is provided with a second positioning step 43 that matches the position of the first positioning step. In this embodiment, the first positioning step can be formed by the plate thickness of the end of the fixed end plate 23. When the sealing block 40 is locked onto the first positioning step formed at the end of the fixed end plate 23 by the second positioning step 43, the fixed end plate 23 can constrain the degree of freedom of movement of the sealing block 40 in the width direction to ensure the sealing performance between the two.

[0080] III. Figure 3 , Figures 5-6 As shown, the fixed end plate 23 is provided with a first positioning step in both the height and width directions of the chassis 10. Correspondingly, the sealing block 40 is provided with a second positioning step 43 in both the height and width directions of the chassis 10, which matches the number, position and structure of the first positioning step.

[0081] The fixed end plate 23 is provided with a first positioning step along the height and / or width direction of the chassis 10, and a second positioning step 43 is provided on the sealing block 40, the position and structure of which are matched with the first positioning step. This design brings the following benefits:

[0082] In the above embodiment, the cooperation of the first positioning step and the second positioning step 43 provides a clear positioning reference for the sealing block 40. During installation, the sealing block 40 only needs to be aligned with the first positioning step to achieve precise positioning, avoiding poor sealing or structural loosening caused by installation errors, and making the installation process simpler. At the same time, the design of the positioning steps increases the contact area between the sealing block 40 and the fixed end plate 23, thereby improving the stability of the connection. When subjected to external forces and vibration or impact, the sealing block 40 is not easily displaced or deformed, ensuring that the air duct has good sealing performance.

[0083] In addition, the mating of the first positioning step and the second positioning step 43 can improve the sealing performance of the connection between the fixed end plate 23 and the sealing block 40. In particular, the first positioning step and the second positioning step 43 set along the width direction of the chassis 10 can form a shape similar to a labyrinth sealing structure to a certain extent, making it more difficult for the airflow inside the air duct to leak into the mounting cavity 11 through the mating gap between the two.

[0084] Based on any of the above embodiments, the sealing block 40 is also provided with a deformation groove 44 extending along the height direction. Assuming that the length direction of the casing 10 is defined as being set along the airflow direction, when the sealing block 40 is set between the fixed end plate 23 (heat exchanger 20) and the fan assembly 30, the sealing block 40 will be subjected to pressure from the length direction. Thus, the deformation groove 44 extending along the height direction can allow the sealing block 40 to undergo a certain deformation along the length direction, absorbing and dispersing the stress transmitted to the sealing block 40 by the fixed end plate 23 and the fan assembly 30, and preventing the sealing block 40 from cracking or deforming due to stress concentration.

[0085] Meanwhile, the presence of the deformation groove 44 also allows the sealing block 40 to better adapt to the dimensional changes between the fixed end plate 23 and the fan assembly 30, thereby ensuring tight contact between the sealing block 40 and the fixed end plate 23 and the fan assembly 30, improving the reliability of the seal. Even during long-term use, due to dimensional changes caused by factors such as thermal expansion and vibration, the sealing block 40 can maintain an effective sealing state, effectively preventing the intrusion of external substances such as air, dust or moisture. While ensuring that the airflow in the duct passes through the heat exchanger 20 in the preset direction, it can also play a certain protective role inside the duct, reducing the situation where dust accumulation leads to a decrease in airflow efficiency.

[0086] In a further embodiment, the deformation grooves 44 are configured as multiple grooves, which are respectively distributed along the height direction on the upper and lower sides of the sealing block 40, and the deformation grooves 44 located on the upper and lower sides of the sealing block 40 are arranged along the length direction. The arrangement of multiple deformation grooves 44 allows the sealing block 40 to deform simultaneously at multiple locations when subjected to pressure, thereby enhancing the overall deformation capability of the sealing block 40, thus better adapting to the dimensional differences between the fixed end plate 23 and the fan assembly 30, and ensuring that the sealing block 40 can fit tightly.

[0087] By distributing multiple deformation grooves 44 along the height direction on the upper and lower sides of the sealing block 40, the sealing block 40 can more effectively disperse and absorb the stress transmitted to it by the fixed end plate 23 and the fan assembly 30. Especially in the embodiment where the fixed end plate 23 and the sealing block 40 are respectively provided with a bearing portion 232 arranged along the height direction and an abutment platform 42, the pressure on the sealing block 40 mainly comes from the abutment platform 42. Therefore, by correspondingly placing the deformation grooves 44 on its upper and lower sides, the sealing block 40 can have better deformation capacity at the main stress points, ensuring the stability of the sealing block 40's assembly state. At the same time, the abutment platform 42 can also better form a stable contact relationship with the bearing portion 232, ensuring the sealing performance of the sealing block 40 for the air duct.

[0088] Please refer to the instruction manual attached. Figures 1-3 Based on any of the above embodiments, the chassis 10 includes a top cover 14, which covers the heat exchanger 20 and the fan assembly 30 and serves as part of the chassis 10, mainly to seal and protect the internal components of the mounting cavity 11.

[0089] Of course, in this embodiment, the chassis 10 also includes side plates, bottom plates, etc., which cooperate with the top cover 14 to form the chassis 10 as a whole and enclose and define the mounting cavity 11. This embodiment will not describe these in detail.

[0090] Based on the above structure, the upper part of the sealing block 40 is fixedly connected to the top cover 14 through the fixing structure 142. The fixed connection between the sealing block 40 and the top cover 14 ensures that the sealing block 40 abuts against the heat exchanger 20 (fixed end plate 23) and the fan assembly 30 (mounting plate 15), and allows the sealing block 40 to have a fixed position in the air duct, preventing it from moving under the action of airflow.

[0091] It is understood that the fixing structure 142 may, but is not limited to, use screws, clips, adhesives, or a combination of these methods to ensure the strength and reliability of the connection.

[0092] For example, in actual film and television scenarios, the chassis 10 is provided with a water receiving tray at the bottom of the heat exchanger 20. The presence of the water receiving tray will be detrimental to the connection between the bottom plate and the sealing block 40. Therefore, in this embodiment, the sealing block 40 is connected to the top cover 14 to improve the assembly stability of the sealing block 40.

[0093] In one embodiment, the top cover 14 is made of sheet metal. In order to increase the connection strength between the top cover 14 and other related components of the chassis 10, downward bending connecting edges 141 are formed on both sides of the top cover 14 in the width direction. One side of the sealing block 40 is connected to the connecting edge 141 through the fixing structure 142, while the other side is blocked by the water receiving tray, which ensures the stability of the top and bottom sides to a certain extent.

[0094] In one embodiment, to reduce the assembly difficulty of the sealing block 40 and the fan assembly 30, and also to make the sealing performance between the two more stable, such as Figures 3-4 As shown, the chassis 10 is also provided with a mounting plate 15 inside the mounting cavity 11. The mounting plate 15 covers the air duct and has clearance openings on both sides of the air duct. The mounting plate 15 provides a stable mounting platform for the fan assembly 30. The fan assembly 30 can be firmly fixed in the mounting cavity 11 by the mounting plate 15, avoiding displacement or damage caused by vibration or impact. At the same time, the clearance openings also ensure that the airflow from the fan assembly 30 to the heat exchanger 20 is not interfered with by the mounting plate 15, so that the air can pass smoothly through the air duct.

[0095] Based on the above, the fan assembly 30 is installed on the side of the mounting plate 15 away from the heat exchanger 20, the first side of the sealing block 40 abuts against the heat exchanger 20, and the second side of the sealing block 40 abuts against the mounting plate 15, thereby forming the above-mentioned state in which the sealing block 40 and the fan assembly 30 are in cooperation.

[0096] As can be seen from the above, the mounting plate 15 can be directly installed on the chassis 10, providing a stable installation platform for the fan assembly 30 and a stable pressure-resistant platform for the seals, ensuring the stability of the sealing block 40 in the air duct and helping to improve the sealing performance of the air duct.

[0097] Based on the above, this embodiment also provides an air conditioning system that uses an indoor unit as provided in any of the above embodiments. In addition to the indoor unit, the air conditioning system also includes an outdoor unit, refrigerant pipes, a control system, and other necessary components. The structure and function of the indoor unit, as one of the core components of the air conditioning system, have been described in detail in the above embodiments, and therefore will not be further elaborated upon in this embodiment. The outdoor unit is typically installed in the outdoor space to provide the cold or heat source required by the air conditioning system. When the air conditioning system is running, the outdoor unit is connected to the indoor unit through refrigerant pipes, circulating the refrigerant (heating medium) between the outdoor unit and the indoor unit to achieve the function of cooling or heating.

[0098] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0099] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0100] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0101] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. An air conditioner indoor unit characterized by comprising: include: The chassis (10) has a hollow mounting cavity (11) inside. An air outlet (12) and an air return outlet (13) communicating with the mounting cavity (11) are respectively opened on both sides of the chassis (10). A heat exchanger (20) is disposed in the mounting cavity (11) and on one side near the air outlet (12); A fan assembly (30) is disposed in the mounting cavity (11) and close to the return air inlet (13). The fan assembly (30) and the heat exchanger (20) are spaced apart in the mounting cavity (11) to form an air duct. A sealing block (40) is disposed on at least one side of the air duct, the sealing block (40) being configured to prevent air from leaking out of the air duct into the mounting cavity (11). 2.The indoor unit of the air conditioner according to claim 1, characterized by, The heat exchanger (20) includes: An upper heat exchanger (21) is disposed on the upper side of the mounting cavity (11); and The lower heat exchanger (22) is disposed on the lower side of the mounting cavity (11), and the lower heat exchanger (22) and the upper heat exchanger (21) are arranged at an angle, and the opposite ends of the lower heat exchanger (22) and the upper heat exchanger (21) are connected by a fixed end plate (23). The first side structure of the sealing block (40) matches the structure of the fixed end plate (23) near the fan assembly (30), the second side structure of the sealing block (40) matches the structure of the fan assembly (30) near the fixed end plate (23), and the opposite sides of the sealing block (40) are respectively connected to the fixed end plate (23) and the fan assembly (30). 3.The indoor unit of the air conditioner according to claim 2, characterized by, The fixed end plate (23) is provided with a positioning groove (231) in the middle of the side near the sealing block (40), and the width of the positioning groove (231) gradually increases from the bottom of the groove to the opening of the groove. The sealing block (40) has a positioning block (41) with a structure matching the positioning groove (231) protruding from the middle of the first side. The sealing block (40) is inserted into the positioning groove (231) through the positioning block (41), and the surface of the positioning block (41) is in surface contact with the groove wall of the positioning groove (231). 4.The indoor unit of the air conditioner according to claim 3, characterized by, The fixed end plate (23) is provided with bearing parts (232) extending along the height direction on the upper and lower sides of the positioning groove (231); The sealing block (40) is provided with abutment platforms (42) on the upper and lower sides of the positioning block (41) respectively, which are adapted to the structure of the bearing part (232). The two abutment platforms (42) are respectively matched with the two bearing parts (232), and the abutment platforms (42) and the bearing parts (232) are in surface contact and abut against each other. 5.The indoor unit of the air conditioner according to claim 2, characterized in that, The fixed end plate (23) has a first positioning step along the height direction and / or width direction of the chassis (10); The sealing block (40) is provided with a second positioning step (43) whose position and structure are matched with the first positioning step. The sealing block (40) and the fixed end plate (23) are positioned and engaged by the second positioning step (43) and the first positioning step. 6.The indoor unit of the air conditioner according to claim 1, characterized by, The sealing block (40) is also provided with a deformation groove (44) extending along the height direction. 7.The indoor unit of the air conditioner according to claim 6, characterized by, The deformation groove (44) is configured as multiple grooves, which are respectively located on the upper and lower sides of the sealing block (40) along the height direction, and the deformation grooves (44) located on the upper and lower sides of the sealing block (40) are arranged along the length direction. 8.The indoor unit of the air conditioner according to any one of claims 1-7, wherein, The chassis (10) includes a top cover (14) which covers the upper side of the heat exchanger (20) and the fan assembly (30); The upper part of the sealing block (40) is fixedly connected to the top cover (14) by a fixing structure (142). 9.The indoor unit of the air conditioner according to any one of claims 1-7, wherein, The chassis (10) is located in the mounting cavity (11) and is also provided with a mounting plate (15). The mounting plate (15) covers the air duct and has a clearance opening that connects the two sides of the air duct. The fan assembly (30) is mounted on the side of the mounting plate (15) away from the heat exchanger (20), the first side of the sealing block (40) abuts against the heat exchanger (20), and the second side of the sealing block (40) abuts against the mounting plate (15).

10. An air conditioning system characterized by, Including the indoor unit of an air conditioner as described in any one of claims 1-8.

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