Outdoor unit and heating and ventilation system

Abstract

The utility model relates to the technical field of heating and ventilation systems, in particular to an outdoor unit and a heating and ventilation system. The outdoor unit comprises a shell, a main control board, a first electric control board and a second electric control board. The main control board, the first electric control board and the second electric control board are all installed in the shell, the main control board is used for being electrically connected with the first indoor unit and the second indoor unit, the first electric control board is electrically connected with the main control board, the first electric control board is used for controlling the first indoor unit, the second electric control board is electrically connected with the main control board, and the second electric control board is used for controlling the second indoor unit. The first electric control board and the second electric control board are both installed in the shell and electrically connected with the main control board, and therefore operation of the first indoor unit and the second indoor unit is controlled. The first electric control board and the second electric control board are both located on the outdoor unit, so that the occupied space of the first electric control board and the second electric control board in the corresponding indoor unit can be saved, the size of the indoor unit is small, and the indoor unit only needs to occupy a small installation space under the condition that a user installs the indoor unit indoors.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning (HVAC) system technology, and in particular to an outdoor unit and HVAC system. Background Technology

[0002] HVAC systems typically consist of multiple indoor air conditioning units. These different indoor units usually require different control boards for operation. Furthermore, some indoor units within an HVAC system have their own internal control boards for operation.

[0003] In related technologies, the indoor unit is relatively large and occupies a lot of installation space. Utility Model Content

[0004] This utility model aims to at least solve one of the technical problems existing in the prior art. In view of this, the embodiments of this application aim to provide an outdoor unit and HVAC system to reduce the size of the indoor unit.

[0005] To achieve the above objectives, one embodiment of this application provides an outdoor unit applied to a heating, ventilation, and air conditioning system including a first indoor unit and a second indoor unit, comprising:

[0006] case;

[0007] The main control board is installed inside the housing and is used to electrically connect to the first indoor unit and the second indoor unit respectively.

[0008] A first electronic control board is installed inside the housing. The first electronic control board is electrically connected to the main control board. The first electronic control board is used to control the first indoor unit.

[0009] The second control board is installed inside the housing and is electrically connected to the main control board. The second control board is used to control the second indoor unit.

[0010] The outdoor unit according to the embodiments of this application has at least the following beneficial effects:

[0011] In the embodiment of this application, the outdoor unit includes a first control board and a second control board. Both the first and second control boards are installed inside the housing and electrically connected to the main control board, thereby controlling the operation of the first and second indoor units. Since both the first and second control boards are located in the outdoor unit, the space occupied by the first and second control boards in their respective indoor units is eliminated. The indoor units are smaller in size, requiring only a small installation space when installed indoors.

[0012] According to some embodiments of this application, the housing includes a side plate, a first end plate, and a second end plate, wherein the first end plate is mounted on the side plate, the first electronic control board is mounted on the first end plate, the second end plate is mounted on the first end plate, and the second electronic control board is mounted on the second end plate.

[0013] According to some embodiments of this application, the side plate has an inspection hole and a cover plate covering the inspection hole. The inspection hole is located on the side of the second electrical control board opposite to the first end plate. The cover plate is detachably installed on the side plate, and the second end plate is detachably installed on the first end plate.

[0014] According to some embodiments of this application, the first end plate has a first mounting hole, and the second end plate includes an end plate body and a first mounting hook connected to each other. The first mounting hook is located on the side of the end plate body facing the first end plate, and the first mounting hook is engaged with the edge of the first mounting hole.

[0015] According to some embodiments of this application, the first mounting hook includes a hook body and a guide connected to each other. The hook body is connected to the end plate body, and the guide is located on the side of the hook body away from the end plate body. Along the top-down direction, the distance between the guide and the end plate body gradually increases along the thickness direction of the first end plate.

[0016] According to some embodiments of this application, the first end plate has a second mounting hole, and the first electronic control board has a second mounting hook facing the first end plate. The second mounting hook is engaged with the edge of the second mounting hole to mount the first electronic control board onto the first end plate.

[0017] According to some embodiments of this application, the second mounting hole includes a guide hole and a receiving hole that communicate with each other. The guide hole is located above the receiving hole, and the opening size of the guide hole gradually decreases in the downward direction. The second mounting hook is fastened to the edge of the receiving hole.

[0018] According to some embodiments of this application, the first end plate has a flange extending along a first direction, the flange being located above the first electronic control board and the second electronic control board, the first direction being the direction from the first electronic control board toward the second electronic control board, projected in a vertical direction, the projection area of ​​the first electronic control board and the projection area of ​​the second electronic control board are both located within the projection area of ​​the flange.

[0019] According to some embodiments of this application, the second end plate protrudes in a direction away from the first electronic control board to form a mounting groove, and at least a portion of the structure of the first electronic control board is located within the mounting groove.

[0020] According to some embodiments of this application, the first end plate has a wire passage extending to the side wall of the first end plate to form an opening. The outdoor unit also includes wires connected to the second electrical control board and the main control board respectively. The wires pass through the wire passage and can exit the wire passage through the opening.

[0021] The outdoor unit also includes a limiting member installed on the first end plate. The limiting member is located on the side of the cable passage away from the first electrical control board. The limiting member extends partially into the cable passage and is used to prevent the wire from coming out of the opening.

[0022] This application also provides a heating, ventilation, and air conditioning system, including:

[0023] First internal unit;

[0024] Second internal unit;

[0025] In any of the above-mentioned outdoor units, the first control board is electrically connected to the first indoor unit, and the second control board is electrically connected to the second indoor unit.

[0026] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an outdoor unit according to an embodiment of this application, showing the housing.

[0028] Figure 2 This is a schematic diagram of the structure of an outdoor unit according to an embodiment of this application; the housing is not shown in the figure.

[0029] Figure 3 This is an exploded view of the outdoor unit according to an embodiment of this application;

[0030] Figure 4 This is an exploded view of the outdoor unit according to an embodiment of this application;

[0031] Figure 5 for Figure 4 A magnified view of a portion at position A in the middle;

[0032] Figure 6 This is a front view of the structure of the outdoor unit according to an embodiment of this application;

[0033] Figure 7 for Figure 6 A magnified view of a section at point B in the middle;

[0034] Figure 8 This is a rear view of the structure of the outdoor unit according to an embodiment of this application.

[0035] Figure label:

[0036] 100, Housing; 110, Side plate; 110a, Inspection hole; 120, Middle partition plate; 130, Housing body; 200, First end plate; 200a, First mounting hole; 200b, Second mounting hole; 200c, Guide hole; 200d, Receiving hole; 200e, Flanged edge; 200f, Wire passage; 200g, Wire clamping part; 200h, Wire threading hole; 200i, Opening; 300, First electrical control board; 300a, Second mounting hook; 400, Second end plate; 400a, Mounting groove; 410, End plate body; 420, First mounting hook; 421, Hook body; 422, Guide component; 500, Second electrical control board; 600, Limiting component; 610, First stop bar; 620, Second stop bar; 700, Main control board. Detailed Implementation

[0037] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of this application, the technical terms "first," "second," "third," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] In the description of the embodiments in this application, the term "and / or" 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. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0042] In the description of the embodiments of this application, the technical terms "top", "bottom", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0044] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0045] In related technologies, HVAC systems include air conditioners, heat pumps, pool machines, and water heaters. An HVAC system comprises multiple indoor units, each equipped with a corresponding electrical control board to regulate its operation. Typically, the control board within each indoor unit requires sufficient internal space, resulting in a relatively large overall size. This can make it difficult for users to find enough space to install the unit, negatively impacting the user experience.

[0046] The first control board 300 and the second control board 500 of this application are both installed inside the external housing 100. The first control board 300 and the second control board 500 are used to control the first indoor unit and the second indoor unit respectively. The first indoor unit and the second indoor unit can save a certain amount of installation space, so the first indoor unit and the second indoor unit are smaller in size.

[0047] This application proposes to provide a heating, ventilation, and air conditioning system, including a first indoor unit, a second indoor unit, and an outdoor unit.

[0048] For example, taking a heating and ventilation system with refrigerant as the heating medium and water as the heating object, the first indoor unit and the second indoor unit of the heating and ventilation system are both air conditioner indoor units, and the first indoor unit and the second indoor unit form a circulation path with the outdoor unit.

[0049] For example, in a heating, ventilation, and air system where air and water are used as the medium, the first indoor unit of the heating, ventilation, and air system can be an air conditioning indoor unit, and the second indoor unit can be a fresh air indoor unit.

[0050] This application proposes to provide an outdoor unit for use in HVAC systems. Please refer to [link / reference]. Figures 1 to 3 The outdoor unit includes a housing 100, a main control board 700, a first electrical control board 300, and a second electrical control board 500. The main control board 700, the first electrical control board 300, and the second electrical control board 500 are all installed inside the housing 100. The main control board 700 is electrically connected to the first indoor unit and the second indoor unit, respectively. The first electrical control board 300 is electrically connected to the main control board 700 and is used to control the first indoor unit. The second electrical control board 500 is electrically connected to the main control board 700 and is used to control the second indoor unit.

[0051] It should be noted that the electrical connection between the first control board 300 and the main control board 700, and the electrical connection between the second control board 500 and the main control board 700, does not mean that both the first control board 300 and the second control board 500 are connected to the main control board 700. For example, the first control board 300 is connected to the second control board 500, and the second control board 500 is connected to the main control board 700; or, both the first control board 300 and the second control board 500 are connected to the main control board 700.

[0052] In this embodiment, the outdoor unit includes a first control board 300 and a second control board 500. Both the first control board 300 and the second control board 500 are installed inside the housing 100 and electrically connected to the main control board 700, thereby controlling the operation of the first and second indoor units. Since both the first control board 300 and the second control board 500 are located in the outdoor unit, the space occupied by the first control board 300 and the second control board 500 in their respective indoor units is saved. The indoor unit is smaller in size, requiring less installation space when installed indoors. Furthermore, during maintenance of the first control board 300 or the second control board 500, repair personnel can perform the work at the outdoor unit, reducing the need for personnel to enter the indoor unit and improving the consumer experience.

[0053] In one embodiment, please refer to Figure 2 and Figure 3The housing 100 includes a side plate 110, a first end plate 200, and a second end plate 400. The first end plate 200 is mounted on the side plate 110, a first electrical control board 300 is mounted on the first end plate 200, the second end plate 400 is mounted on the first end plate 200, and a second electrical control board 500 is mounted on the second end plate 400. Exemplarily, the second end plate 400 is directly connected to the first end plate 200, and the second end plate 400 is located on the side of the first electrical control board 300 opposite to the first end plate 200 along the thickness direction of the first electrical control board 300. The second electrical control board 500 is located on the side of the second end plate 400 opposite to the first electrical control board 300.

[0054] For example, the housing 100 also includes a housing body 130, a side plate 110 mounted on the housing body 130, and a first end plate 200 located within the area enclosed by the housing body 130 and the side plate 110.

[0055] For example, the first end plate 200, the first electrical control board 300, the second end plate 400, and the second electrical control board 500 are all arranged parallel to each other in the thickness direction. Along the thickness direction of the first end plate 200, the first end plate 200, the first electrical control board 300, the second end plate 400, and the second electrical control board 500 are arranged sequentially. The thickness direction of the first end plate 200 is orthogonal to the vertical direction. The thickness direction of the first end plate 200 is as follows... Figure 4 The direction indicated by the middle arrow R1, the up and down direction is as follows: Figure 4 The direction indicated by the middle arrow R2.

[0056] It should be noted that "the second end plate 400 is directly connected to the first end plate 200" means that the second end plate 400 and the first end plate 200 are in direct contact to achieve the connection.

[0057] In the embodiment of this application, the housing 100 includes a first end plate 200 and a second end plate 400 to be installed and connected to the first electronic control board 300 and the second electronic control board 500 respectively. During the installation of the first electronic control board 300 and the second electronic control board 500, the interference between the first electronic control board 300 and the second electronic control board 500 can be reduced to a certain extent, and the assembly difficulty is low.

[0058] In one embodiment, please refer to Figure 1 The housing 100 also includes a partition 120 installed on the housing body 130, and a main control board 700 installed on the partition 120. The partition 120 and the first end plate 200 are spaced apart. The partition 120 is located on the side of the first end plate 200 opposite to the second end plate 400. The partition 120 divides the interior of the housing body 130 into a fan chamber and a compressor chamber. The first end plate 200 is located in the compressor chamber, and the side plate 110 is located on the side of the first end plate 200 opposite to the partition 120.

[0059] In one embodiment, please refer to Figure 1The side plate 110 has an inspection hole 110a and a cover plate covering the inspection hole 110a. The inspection hole 110a is located on the side of the second electrical control board 500 opposite to the first end plate 200. The cover plate is detachably installed on the side plate 110, and the second end plate 400 is detachably installed on the first end plate 200. By removing the cover plate, maintenance personnel can expose the inspection hole to the outside environment for inspection of the second electrical control board 500. By detaching the second end plate 400 from the first end plate 200, maintenance personnel can then inspect the first electrical control board 300. This reduces the difficulty of maintenance and increases the efficiency of maintenance personnel.

[0060] In one embodiment, please refer to Figure 3 The first end plate 200 has a first mounting hole 200a, and the second end plate 400 includes an end plate body 410 and a first mounting hook 420 connected to each other. The number of first mounting holes 200a can be single or multiple, and the number of first mounting holes 200a corresponds to the number of first mounting hooks 420. Each first mounting hook 420 can pass through a different first mounting hole 200a. The first mounting hook 420 is located on the side of the end plate body 410 facing the first end plate 200, and passes through the first mounting hole 200a along the thickness direction of the first end plate 200. The first mounting hook 420 is engaged with the edge of the first mounting hole 200a. The engagement of the first mounting hook 420 with the edge of the first mounting hole 200a allows the second end plate 400 to be mounted on the first end plate 200, enabling the second end plate 400 to be quickly connected to the first end plate 200, thus fixing the second end plate 400 relative to the first end plate 200.

[0061] For example, the second end plate 400 is an integrally formed structure with high overall strength, and the second end plate 400 can provide a certain degree of protection for both the first electronic control board 300 and the second electronic control board 500.

[0062] It is understood that other embodiments of this application do not limit the connection method of the first end plate 200 and the second end plate 400. Exemplarily, the first end plate 200 and the second end plate 400 are connected by screws.

[0063] In one embodiment, please refer to Figure 4 and Figure 5The first mounting hook 420 includes a hook body 421 and a guide member 422 connected to each other. The first mounting hook 420 can be an integrally formed structure. The hook body 421 is connected to the end plate body 410, and the guide member 422 is located on the side of the hook body 421 away from the end plate body 410. In the top-down direction, the distance between the guide member 422 and the end plate body 410 gradually increases along the thickness direction of the first end plate 200. For example, the guide member 422 is inclined towards the first end plate 200 from top to bottom. During the installation of the second end plate 400 onto the first end plate 200, the guide member 422 can easily extend from the side of the first end plate 200 into the first mounting hole 200a, so that the first mounting hook 420 aligns with the first mounting hole 200a. This reduces the need for the second end plate 400 to be tilted at a large angle to extend into the first mounting hole 200a, making the installation process of the second end plate 400 and the first end plate 200 simpler and more efficient.

[0064] It is understood that other embodiments of this application are not limited to whether the first mounting hook 420 has a guide 422.

[0065] In one embodiment, please refer to Figure 2 and Figure 8 The first end plate 200 has a second mounting hole 200b, and the first electronic control board 300 has a second mounting hook 300a facing the first end plate 200. The second mounting hook 300a engages with the edge of the second mounting hole 200b to mount the first electronic control board 300 onto the first end plate 200. The first electronic control board 300 and the first end plate 200 are connected by a snap-fit ​​connection, and the first electronic control board 300 can be connected to the first end plate 200 relatively easily, with low assembly difficulty.

[0066] In one embodiment, please refer to Figure 8 Along the top-to-bottom direction, the distance between the second mounting hook 300a and the first electronic control board 300 gradually increases along the thickness direction of the first electronic control board 300. The second mounting hole 200b includes a guide hole 200c and a receiving hole 200d that are interconnected. The guide hole 200c is located above the receiving hole 200d. Along the top-to-bottom direction, the size of the opening 200i of the guide hole 200c gradually decreases. The second mounting hook 300a is engaged with the edge of the receiving hole 200d. During the process of installing the first electronic control board 300 onto the first end plate 200, the second mounting hook 300a of the first end plate 200 can extend from the guide hole 200c into the second mounting hole 200b, and then move downwards so that the second mounting hook 300a moves into the receiving hole 200d. The larger guide hole 200c with opening 200i can reduce the assembly accuracy of the second mounting hook 300a when it is installed into the second mounting hole 200b, speed up the installation of the first electronic control board 300 and the first end plate 200, and increase assembly efficiency.

[0067] It is understood that the size of the opening 200i of the guide hole 200c refers to the distance between the two hole walls of the guide hole 200c gradually approaching from top to bottom along the width direction of the first end plate 200. The size of the opening 200i of the receiving hole 200d is equal to the size of the minimum opening 200i of the guide hole 200c. The width direction of the first end plate 200 is orthogonal to both the thickness direction and the vertical direction of the first end plate 200. For example, the width direction of the first end plate 200 is as follows: Figure 8 The direction indicated by the middle arrow R3.

[0068] In one embodiment, please refer to Figure 4 The first end plate 200 has a flange 200e extending along a first direction, which is the direction from the first control board 300 toward the second control board 500. The flange 200e is located above the first control board 300 and the second control board 500. The first direction is parallel to the thickness direction of the first end plate 200 and is unidirectional. Projected vertically, the projection areas of the first control board 300 and the second control board 500 are both located within the projection area of ​​the flange 200e. The first control board 300 and the second control board 500 are both located below the flange 200e. The flange 200e can provide a certain water-blocking effect for the first control board 300 and the second control board 500, reducing the possibility of short circuits caused by external condensation or rainwater. For example, the flange 200e is located at the top of the first end plate 200.

[0069] It is understood that other embodiments of this application do not limit whether the first end plate 200 is formed with a flange 200e.

[0070] In one embodiment, please refer to Figure 4 The second end plate 400 protrudes in a direction away from the first control board 300 to form a mounting groove 400a, and at least a portion of the structure of the first control board 300 is located within the mounting groove 400a. Exemplarily, the second end plate 400 protrudes in a first direction to form the mounting groove 400a. The second end plate 400 can cover a portion of the structure of the first control board 300, providing a certain degree of protection for the first control board 300 and reducing the possibility of short circuits caused by external moisture contacting the first control board 300.

[0071] Understandably, the outdoor unit also includes multiple wires. Wires are connected between the first control board 300 and the main control board 700, as well as between the second control board 500 and the main control board 700, so that the main control board 700 can be electrically connected to the first control board 300 and the second control board 500 respectively.

[0072] In one embodiment, please refer to Figure 6 and Figure 7The first end plate 200 has a cable passage 200f, which extends to the side wall of the first end plate 200 to form an opening 200i. The outdoor unit also includes wires connected to the second control board 500 and the main control board 700, respectively. The wires pass through the cable passage 200f and can exit the cable passage 200f through the opening 200i. The wires can move into or out of the cable passage 200f through the opening 200i. The outdoor unit also includes a limiting member 600 installed on the first end plate 200. The limiting member 600 is located on the side of the cable passage 200f opposite to the first control board 300, and partially extends into the cable passage 200f. The limiting member 600 is used to prevent the wires from coming out of the opening 200i. There are multiple cable passages 200f, and each cable passage 200f is provided with a corresponding limiting member 600. The limiting member 600 extends partially into the wire passage 200f and is used to prevent the wire from coming out of the wire passage 200f. The limiting member 600 restricts the movement of the wire, reducing the likelihood of the wire coming out of the wire passage 200f when it passes through it. Furthermore, when the wire is connected to both the first control board 300 and the main control board 700, the wire can move from the opening 200i into the wire passage 200f, thus allowing the limiting member 600 to prevent the wire from coming out. The manner in which the wire enters the wire passage 200f is not limited by the connection status of the wire to the second control board 500 and the main control board 700.

[0073] In another embodiment, the first end plate 200 has a wire passage 200f, which is spaced apart from the side wall of the first end plate 200. The wires need to be passed through the wire passage 200f first, so that the first control board 300 is electrically connected to the main control board 700.

[0074] It is understood that other embodiments of this application do not limit whether the outdoor unit is equipped with a limiter 600.

[0075] In one embodiment, please refer to Figure 7 The sidewall of the cable passage 200f at the end opposite to the outlet 200i is curved. The curved surface increases the contact area between the conductor and the sidewall of the cable passage 200f, reducing wear between them and increasing the conductor's lifespan. For example, the sidewall of the cable passage 200f at the end opposite to the outlet 200i is a circular arc surface.

[0076] For example, please refer to Figure 7The limiting part includes a first stop bar 610 and a second stop bar 620. The first stop bar 610 and the second stop bar 620 are respectively connected to the first end plate 200. The first stop bar 610 and the second stop bar 620 are arranged in the vertical direction and projected along the width direction of the first end plate 200. The projection area of ​​the first stop bar 610 partially overlaps with the projection area of ​​the wire passage 200f, and the projection area of ​​the second stop bar 620 partially overlaps with the projection area of ​​the wire passage 200f.

[0077] In one embodiment, a limiting member 600 is rotatably mounted on a first end plate 200. The limiting member 600 has a first state and a second state. When the limiting member 600 is in the first state, the limiting member 600 can restrict the wire from moving from the wire passage 200f in the direction toward the opening 200i. When the limiting member 600 is in the second state, the wire can move into or out of the wire passage 200f. The limiting member 600 can switch between the first state and the second state by rotating relative to the first end plate 200.

[0078] In one embodiment, the outdoor unit further includes an elastic element. The elastic element can be a torsion spring, with one arm of the torsion spring abutting against the first end plate 200 and the other arm abutting against the limiting member 600. The elastic element abuts against both the limiting member 600 and the first end plate 200, and can apply a spring force to the limiting member 600 to maintain it in a first state. A wire can push the limiting member 600 to rotate to overcome the spring force of the elastic element, causing the limiting member 600 to switch from the first state to a second state. The elastic element can also reset the limiting member 600.

[0079] In one embodiment, please refer to Figure 6 The first end plate 200 protrudes upward to form a wire clamping portion 200g. The wire clamping portion 200g has a through-hole 200h. When a wire passes through the through-hole 200h, the wire abuts against the wire clamping portion 200g. The wire clamping portion 200g abuts against the top of the wire, and the through-hole 200h guides the direction of the wire and reduces the degree of upward protrusion. Furthermore, the wire clamping portion 200g provides a certain degree of protection for the wire.

[0080] It is understood that other embodiments of this application do not limit whether the first end plate 200 is formed with a pressure line portion 200g.

[0081] For example, the outdoor unit also includes a fan, evaporator, compressor, outdoor heat exchanger, and expansion valve. The fan, evaporator, compressor, outdoor heat exchanger, and expansion valve are all installed within the casing 100, and these components are sequentially connected via refrigerant pipes. When the multi-split system is operating, the refrigerant in the evaporator absorbs heat from the air, thus becoming a high-temperature, low-pressure gas. This high-temperature gas is then compressed by the compressor, transforming the refrigerant into a high-temperature, high-pressure liquid. This high-temperature, high-pressure liquid exchanges heat with water in the water circulation path through a heat exchanger, raising the water temperature and transforming the refrigerant into a low-temperature, high-pressure liquid. The low-temperature, high-pressure liquid then passes through the expansion valve, becoming a low-temperature, low-pressure gas, which then circulates back to the evaporator, thus completing the refrigerant circulation process.

[0082] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of protection.

Claims

1. An outdoor unit, applied to a heating, ventilation, and air conditioning system including a first indoor unit and a second indoor unit, characterized in that, include: case; The main control board is installed inside the housing and is used to electrically connect to the first indoor unit and the second indoor unit respectively. A first electronic control board is installed inside the housing. The first electronic control board is electrically connected to the main control board. The first electronic control board is used to control the first indoor unit. The second control board is installed inside the housing and is electrically connected to the main control board. The second control board is used to control the second indoor unit.

2. The outdoor unit according to claim 1, characterized by The housing includes a side plate, a first end plate, and a second end plate. The first end plate is mounted on the side plate, the first electronic control board is mounted on the first end plate, the second end plate is mounted on the first end plate, and the second electronic control board is mounted on the second end plate.

3. The outdoor unit according to claim 2, characterized by The side plate has an inspection hole and a cover plate covering the inspection hole. The inspection hole is located on the side of the second electrical control board opposite to the first end plate. The cover plate is detachably installed on the side plate, and the second end plate is detachably installed on the first end plate.

4. The outdoor unit according to claim 2, characterized in that, The first end plate has a first mounting hole, and the second end plate includes an end plate body and a first mounting hook connected to each other. The first mounting hook is located on the side of the end plate body facing the first end plate, and the first mounting hook is fastened to the edge of the first mounting hole.

5. The external machine according to claim 4, wherein The first mounting hook includes a hook body and a guide connected to each other. The hook body is connected to the end plate body, and the guide is located on the side of the hook body away from the end plate body. In the top-down direction, the distance between the guide and the end plate body gradually increases along the thickness direction of the first end plate.

6. The external machine according to claim 2, wherein The first end plate has a second mounting hole, and the first electronic control board has a second mounting hook facing the first end plate. The second mounting hook is engaged with the edge of the second mounting hole to mount the first electronic control board onto the first end plate.

7. The external machine according to claim 6, wherein The second mounting hole includes a guide hole and a receiving hole that are interconnected. The guide hole is located above the receiving hole, and the opening size of the guide hole gradually decreases in the direction from top to bottom. The second mounting hook is fastened to the edge of the receiving hole.

8. The external machine of claim 2, wherein, The first end plate has a flange extending along a first direction. The flange is located above the first control board and the second control board. The first direction is the direction from the first control board to the second control board. The flange is projected in the vertical direction, and the projection areas of the first control board and the second control board are both located within the projection area of ​​the flange.

9. The external machine of claim 2, wherein, The second end plate protrudes in a direction away from the first electronic control board to form a mounting groove, and at least a portion of the structure of the first electronic control board is located within the mounting groove.

10. The external machine of claim 2, wherein, The first end plate has a wire passage extending to the side wall of the first end plate to form an opening. The outdoor unit also includes wires connected to the second electrical control board and the main control board respectively. The wires pass through the wire passage and can exit the wire passage through the opening. The outdoor unit also includes a limiting member installed on the first end plate. The limiting member is located on the side of the cable passage away from the first electrical control board. The limiting member extends partially into the cable passage and is used to prevent the wire from coming out of the opening.

11. A heating and ventilation system, characterized in that include: First internal unit; Second internal unit; The outdoor unit as described in any one of claims 1 to 10, wherein both the first indoor unit and the second indoor unit are electrically connected to the main control board.

Images