Outdoor unit and heating and ventilation equipment

Abstract

The utility model provides an outdoor unit and heating and ventilation equipment, the outdoor unit comprises an air side valve assembly, a heat exchanger, a compressor and a four-way valve assembly, and the compressor is provided with an exhaust connector and an air return connector; the four-way valve assembly is provided with a first connector, a second connector, a third connector and a fourth connector which are communicated with one another, the first connector is communicated with the heat exchanger, the second connector is communicated with the air return connector, the third connector is communicated with the air side valve assembly, the fourth connector is communicated with the exhaust connector, and the first connector, the second connector and the fourth connector face the same direction. According to the outdoor unit, the four connectors, communicated with the heat exchanger and the compressor, of the four-way valve assembly are arranged to be in the same direction, and the heat exchanger and the compressor connected with the three connectors are inconvenient to disassemble along with the four-way valve assembly, so that when the four-way valve assembly needs to be maintained, the four connectors, in the same direction, of the four-way valve assembly can be cut off; the four-way valve assembly is integrally detached along with the gas side valve assembly convenient to detach, and the detaching efficiency and convenience of the four-way valve assembly are improved.

Description

Technical Field

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

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] The existing four-way valve assembly of outdoor units of HVAC equipment is difficult to remove because it is connected to multiple pipes with different directions. Utility Model Content

[0004] The purpose of this invention is to at least solve the problem of the difficulty in disassembling the four-way valve assembly of the outdoor unit of existing HVAC equipment. This purpose is achieved through the following technical solution:

[0005] The first aspect of this utility model provides an outdoor unit, comprising:

[0006] Outdoor heat exchanger;

[0007] The compressor has an exhaust port and a return port;

[0008] Gas-side valve assembly and liquid-side valve assembly, wherein the liquid-side valve assembly is connected to the outdoor heat exchanger;

[0009] The four-way valve assembly has a first interface, a second interface, a third interface, and a fourth interface that are interconnected. The first interface is connected to the heat exchanger, the second interface is connected to the return gas interface, the third interface is connected to the gas-side valve assembly, and the fourth interface is connected to the exhaust interface. The first interface, the second interface, and the fourth interface are oriented in the same direction.

[0010] The outdoor unit proposed in this utility model sets the four ports of the four-way valve assembly that connect the heat exchanger and the compressor to face the same direction. Since the heat exchanger and the compressor connected to these three ports are inconvenient to disassemble together with the four-way valve assembly, when the four-way valve assembly needs to be repaired, the four ports of the four-way valve assembly facing the same direction can be cut off, and the gas-side valve assembly that can be disassembled together with the four-way valve assembly can be disassembled as a whole, which improves the disassembly efficiency and convenience of the four-way valve assembly.

[0011] In addition, the outdoor unit according to this utility model may also have the following additional technical features:

[0012] In some embodiments of this utility model, the first interface, the second interface, the third interface, and the fourth interface are all arranged downwards along the height direction of the outdoor unit.

[0013] In some embodiments of this utility model, the outdoor unit further includes a first pipe, a second pipe, a third pipe, and a fourth pipe. One end of the first pipe is welded to the first interface from bottom to top, and the other end of the first pipe is connected to the heat exchanger. One end of the second pipe is welded to the second interface from bottom to top, and the other end of the second pipe is connected to the return gas interface. One end of the third pipe is welded to the third interface from bottom to top, and the other end of the third pipe is connected to the gas-side valve assembly. One end of the fourth pipe is welded to the fourth interface from bottom to top, and the other end of the fourth pipe is connected to the exhaust port.

[0014] In some embodiments of this utility model, the four-way valve assembly includes a valve body, which is cylindrical and has a movable switch. The switch can switch between a cooling mode and a heating mode. When the switch is in the cooling mode, the first interface is connected to the fourth interface, and the second interface is connected to the third interface. When the switch is in the heating mode, the first interface is connected to the second interface, and the third interface is in fluid communication with the fourth interface.

[0015] In some embodiments of this utility model, the outdoor unit further includes a first pipe, a second pipe, and a third pipe. The first interface is connected to the outdoor heat exchanger through the first pipe, the second interface is connected to the return gas interface through the second connecting pipe, and the third interface is fluidly connected to the gas-side valve assembly through the third pipe. The four-way valve assembly further includes three first valve pipes, which are arranged in a row along the longitudinal direction of the valve body. Each first valve pipe has two opposing ports. One port of each of the three first valve pipes is inserted into the valve body from the lower circumference side. The other port of each of the three first valve pipes forms a downward-facing first interface, a second interface, and a third interface, respectively. The first pipe, the second pipe, and the third pipe are respectively inserted into the first interface, the second interface, and the third interface from bottom to top.

[0016] In some embodiments of this utility model, the outdoor unit further includes a fourth pipe, the fourth interface is connected to the exhaust interface via the fourth pipe, and the four-way valve assembly further includes a U-shaped second valve pipe, the second valve pipe having two opposing ports, one port of the second valve pipe being inserted into the valve body from the upper circumferential side of the valve body, and the other port of the second valve pipe forming the downward-facing fourth interface, the fourth pipe being inserted into the fourth interface from bottom to top.

[0017] In some embodiments of this utility model, the main bodies of the three first valve tubes and the second valve tubes are all made of stainless steel, and the first interface, the second interface, the third interface and the fourth interface are made of copper. The copper first interface, the second interface and the third interface are respectively disposed on the pipe wall of the main body of the corresponding first valve tube, and the fourth interface is disposed on the pipe wall of the main body of the second valve tube.

[0018] In some embodiments of this utility model, the first interface, the second interface, the third interface and the fourth interface are copper sleeves or copper plating.

[0019] In some embodiments of this utility model, the main bodies of the first pipe, the second pipe, the third pipe, and the fourth pipe are all made of stainless steel. The first peripheral surface of the portion of the first pipe inserted into the first interface is made of copper, the second peripheral surface of the portion of the second pipe inserted into the second interface is made of copper, the third peripheral surface of the portion of the third pipe inserted into the third interface is made of copper, and the fourth peripheral surface of the portion of the fourth pipe inserted into the fourth interface is made of copper.

[0020] In some embodiments of this utility model, the main body of the first valve pipe includes a first pipe section and a second pipe section coaxially arranged. The second pipe section is connected to the valve body through the first pipe section. The inner diameter of the second pipe section is larger than the inner diameter of the first pipe section. A flared section is formed inside the second pipe section. The first interface, the second interface, and the third interface are respectively disposed in the corresponding flared sections.

[0021] In some embodiments of this utility model, the outdoor unit further includes a housing, in which a receiving cavity is formed. The heat exchanger, the compressor, and the four-way valve assembly are all disposed in the receiving cavity, and the gas-side valve assembly is detachably installed on the housing.

[0022] In some embodiments of this utility model, the housing includes a right side plate and a valve mounting plate. The right side plate is provided with a mounting port, and the valve mounting plate covers the mounting port. The gas-side valve assembly is detachably mounted on the valve mounting plate.

[0023] The second aspect of this utility model provides a heating, ventilation, and air conditioning (HVAC) device, including the outdoor unit proposed in the first aspect of this utility model.

[0024] The outdoor unit of the HVAC equipment proposed in the second aspect of this utility model has a four-way valve assembly that is easy to disassemble. The three ports of the four-way valve assembly that connect the heat exchanger and the compressor are set to face the same direction. Since the heat exchanger and the compressor connected to these three ports are not convenient to disassemble together with the four-way valve assembly, when it is necessary to repair the four-way valve assembly, the three ports of the four-way valve assembly that face the same direction can be cut off, and the four-way valve assembly can be disassembled as a whole along with the gas-side valve assembly that is easy to disassemble together, thereby improving the disassembly efficiency and convenience of the four-way valve assembly. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0026] Figure 1 A schematic diagram of the structure of an outdoor unit according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic diagram of the four-way valve assembly and piping according to an embodiment of the present invention is shown from a first-view perspective.

[0028] Figure 3 A schematic diagram of the four-way valve assembly and piping according to an embodiment of the present invention is shown from a second perspective.

[0029] Figure 4 A schematic diagram of the structure of a four-way valve assembly according to an embodiment of the present invention is shown.

[0030] Figure 5 A schematic diagram of the refrigerant circulation system of a heating, ventilation, and air conditioning (HVAC) device according to an embodiment of the present invention is shown.

[0031] Figure 6 A schematic cross-sectional view of a four-way valve assembly according to an embodiment of the present invention is shown.

[0032] The attached figures are labeled as follows:

[0033] 1. Outdoor unit; 10. Cabinet; 132. Right side panel; 2. Indoor unit;

[0034] 51. Compressor; 511. Discharge port; 512. Return port; 55. Gas-side valve assembly; 551. Valve mounting plate;

[0035] 53. Four-way valve assembly; 531. First port; 532. Second port; 533. Third port; 534. Fourth port; 535. Valve body; 536. First valve tube; 537. Second valve tube; 538. Switch; 539. Flared section; 53. Liquid-side valve assembly;

[0036] 541. First pipeline; 542. Second pipeline; 543. Third pipeline; 544. Fourth pipeline;

[0037] 61. Outdoor heat exchanger; 62. Indoor heat exchanger. Detailed Implementation

[0038] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0039] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0040] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0041] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0042] like Figures 1 to 6 As shown, Figure 1 In the first aspect of this utility model, an outdoor unit 1 is provided, comprising an outdoor heat exchanger 61, an air-side valve assembly 55, a liquid-side valve assembly 56, a compressor 51, and a four-way valve assembly 53. The compressor 51 has an exhaust port 511 and a return port 512. The liquid-side valve assembly 56 is connected to the outdoor heat exchanger 61. The four-way valve assembly 53 has a first port 531, a second port 532, a third port 533, and a fourth port 534 that are interconnected. The first port 531 is connected to the outdoor heat exchanger 61, the second port 532 is connected to the return port 512, the third port 533 is connected to the air-side valve assembly 55, and the fourth port 534 is connected to the exhaust structure. The first port 531, the second port 532, the third port 533, and the fourth port 534 have the same orientation.

[0043] It is understood that the outdoor unit 1 proposed in this utility model can be an air conditioning outdoor unit 1 or the outdoor unit 1 of other HVAC equipment. The outdoor unit 1 has a housing 10, which forms an internal cavity. The cavity houses a fan assembly, an outdoor heat exchanger 61 (condenser), a compressor 51, and a four-way valve assembly 53. The gas-side valve assembly 55 is usually mounted on the housing 10 for easy installation and maintenance. The fan assembly is used to provide air-cooled heat exchange for the outdoor heat exchanger 61. Taking the HVAC system in cooling mode as an example, the working cycle of outdoor unit 1 involves the refrigerant entering compressor 51 through return port 512 for compression. It then transforms into a high-temperature, high-pressure gas, which is discharged from exhaust port 511. The refrigerant then enters four-way valve assembly 53 through second port 532 and exits through first port 531, entering outdoor heat exchanger 61 (condenser). After absorbing and releasing heat in outdoor heat exchanger 61, it becomes a medium-temperature, high-pressure liquid. After passing through expansion valve, it becomes a low-temperature, low-pressure liquid. After absorbing and releasing heat in indoor heat exchanger 62 (evaporator) of indoor unit 2, it becomes a low-temperature, low-pressure gas. It then enters four-way valve assembly 53 through fourth port 534 and returns to compressor 51 through third port 533, continuing the cycle. The first port 531, second port 532, third port 533, and fourth port 534 of four-way valve assembly 53 can be arranged in the same direction or tilted at a certain angle, approximating the orientation. The interfaces of the four-way valve assembly 53 connecting the compressor 51 and the outdoor heat exchanger 61 are oriented in the same direction. When disassembling the four-way valve assembly 53, the four interfaces connecting the four-way valve assembly 53 to the compressor 51 and the outdoor heat exchanger 61 can be cut off. By pulling the four-way valve assembly 53 in the opposite direction, the four-way valve assembly 53 can be disassembled together with the easily disassembled gas-side valve assembly 55.

[0044] The outdoor unit 1 proposed in this utility model sets the three interfaces of the four-way valve assembly 53 connecting the outdoor heat exchanger 61 and the compressor 51 to face the same direction. Since the outdoor heat exchanger 61 and the compressor 51 connected to these three interfaces are inconvenient to disassemble together with the four-way valve assembly 53, when it is necessary to repair the four-way valve assembly 53, the three interfaces of the four-way valve assembly 53 facing the same direction can be cut off, and the gas side valve assembly 55, which is convenient to disassemble together with the four-way valve assembly 53, can be disassembled as a whole, thereby improving the disassembly efficiency and convenience of the four-way valve assembly 53.

[0045] In some embodiments of this utility model, the first interface 531, the second interface 532, the third interface 533 and the fourth interface 534 are all arranged downwards along the height direction of the outdoor unit 1.

[0046] It is understandable that the first interface 531, the second interface 532, the third interface 533, and the fourth interface 534 can all be set downwards. When it is necessary to disassemble the four-way valve assembly 53, the pipelines connecting the first interface 531, the second interface 532, and the fourth interface 534 to the outdoor heat exchanger 61 and the compressor 51 can be cut off. The pipeline connected to the four-way valve assembly 53 along with the third interface 533, as well as the gas-side valve assembly 55, can be lifted to complete the disassembly of the four-way valve assembly 53. Alternatively, all connected pipelines can be cut off, and the four-way valve assembly 53 can be lifted to complete the disassembly.

[0047] In some embodiments of this utility model, the outdoor unit 1 further includes a first pipe 541, a second pipe 542, a third pipe 543, and a fourth pipe 544. One end of the first pipe 541 is welded to the first interface 531 from bottom to top, and the other end of the first pipe 541 is connected to the heat exchanger. One end of the second pipe 542 is welded to the second interface 532 from bottom to top, and the other end of the second pipe 542 is connected to the return gas interface 512. One end of the third pipe 543 is welded to the third interface 533 from bottom to top, and the other end of the third pipe 543 is connected to the gas-side valve assembly 55. One end of the fourth pipe 544 is welded to the fourth interface 534 from bottom to top, and the other end of the fourth pipe 544 is connected to the exhaust interface 511.

[0048] Understandably, the four-way valve uses welding to fix the first pipe 541, second pipe 542, third pipe 543, and fourth pipe 544, making the connection between the four-way valve and the first pipe 541, second pipe 542, and third pipe 543 more reliable and reducing the risk of leakage. The identical orientation of the first interface 531, second interface 532, and fourth interface 534 allows for easy disassembly of the four-way valve assembly 53 when maintenance is needed. This improves the efficiency and convenience of disassembly. Furthermore, the four-way valve assembly 53 is connected to the outdoor heat exchanger 61 via the first pipe 541, to the return gas interface 512 via the second pipe 542, to the gas-side valve assembly 55 via the third pipe 543, and to the exhaust interface 511 via the fourth pipe 544, thus forming a refrigeration cycle system in conjunction with the compressor 51 and the outdoor heat exchanger 61.

[0049] In some embodiments of this utility model, the four-way valve assembly 53 includes a valve body 535, which is cylindrical and has a movable switch 538. The switch 538 can switch between a cooling mode and a heating mode. When the switch 538 is in the cooling mode, the first port 531 is connected to the fourth port 534, and the second port 532 is connected to the third port 533. When the switch 538 is in the heating mode, the first port 531 is connected to the second port 532, and the third port 533 is in fluid communication with the fourth port 534.

[0050] Understandably, the switch 538 is movable along the axial direction of the valve body 535. The switch 538 has a transition cavity that communicates with the cavity inside the valve body 535 and has two openings. Specifically, the switch 538 is slidably mounted on the valve body 535. During the movement of the switch 538, the two openings selectively connect the first interface 531 to the second interface 532, at which time the third interface 533 is connected to the fourth interface 534 through the cavity inside the valve body 535; or the third interface 533 is connected to the second interface 532, at which time the fourth interface 534 is connected to the first interface 531 through the cavity inside the valve body 535, thereby enabling the refrigerant circulation system of the HVAC equipment to switch between cooling and heating modes.

[0051] In some embodiments of this utility model, the outdoor unit 1 further includes a first pipe 541, a second pipe 542, and a third pipe 543. A first interface 531 is connected to the outdoor heat exchanger 61 via the first pipe 541; a second interface 532 is connected to the return gas interface 511 via the second pipe 542; and a third interface 533 is fluidly connected to the gas-side valve assembly 55 via the third pipe 543. The four-way valve assembly 53 further includes three first valve pipes 536, which are arranged in a row along the longitudinal direction of the valve body 535. The tube 536 has two opposite ports. One port of each of the three first valve tubes 536 is inserted into the valve body 535 from the lower circumferential side. The other port of each of the three first valve tubes 536 forms a first interface 531, a second interface 532, and a third interface 533 facing downwards, respectively. The first pipe 541, the second pipe 542, and the third pipe 543 are inserted into the first interface 531, the second interface 532, and the third interface 533 from bottom to top, respectively.

[0052] Understandably, to facilitate the connection of the first pipe 541, the second pipe 542, and the third pipe 543 to the valve body 535, three first valve pipes 536 can extend from the periphery of the valve body 535. The first valve pipes 536 can be straight pipes and can be inserted, welded, or integrally formed with the valve body 535. One end of the first valve pipe 536 is connected to the valve body 535, and the other end is provided with a first interface 531, a second interface 532, and a third interface 533, allowing the first pipe 541, the second pipe 542, and the third pipe 543 to connect to the valve body 535. 2 and the third pipe 543 can be inserted into the first interface 531, the second interface 532 and the third interface 533 respectively. On the one hand, the inner end of the interface can limit the pipe. On the other hand, the interface setting can increase the contact area between the first pipe 541, the second pipe 542 and the third pipe 543 and the first valve pipe 536 by inserting them into the first valve pipe 536, so as to improve the connection strength of the weld.

[0053] In some embodiments of this utility model, the outdoor unit 1 further includes a fourth pipe 544, and the fourth interface 534 is connected to the exhaust interface 512 via the fourth pipe 544. The four-way valve assembly 53 also includes a U-shaped second valve pipe 537, which has two opposing ports. One port of the second valve pipe 537 is inserted into the valve body 535 from the upper side of the valve body 535, and the other port of the second valve pipe 537 forms a downward-facing fourth interface 534. The fourth pipe 544 is inserted into the fourth interface 534 from bottom to top.

[0054] Understandably, the second valve pipe 537 can be made of stainless steel or copper and connected to the valve body 535 by insertion, welding, or integral molding. One end of the second valve pipe 537 can serve as the fourth interface 534 for connecting pipelines. The second valve pipe 537 is a U-shaped bend, and the area enclosed by this bend has a downward-facing opening, so that the end of the second valve pipe 537 away from the valve body 535 is positioned downwards, facing the same direction as the other three interfaces. This facilitates cutting off the four pipelines connected to the four interfaces when disassembling the four-way valve assembly 53, and then lifting the four-way valve assembly 53 upwards to complete the disassembly. Alternatively, the pipeline connecting the four-way valve assembly 53 and the air-side valve assembly 55 can be retained, and the four-way valve assembly 53 and the air-side valve assembly 55 can be disassembled as a whole.

[0055] In some embodiments of this utility model, the main bodies of the three first valve tubes 536 and the second valve tube 537 are made of stainless steel, and the first interface 531, the second interface 532, the third interface 533 and the fourth interface 534 are made of copper. The copper first interface 531, the second interface 532 and the third interface 533 are respectively disposed on the tube wall of the main body of the corresponding first valve tube, and the fourth interface 534 is disposed on the tube wall of the main body of the second valve tube 537.

[0056] Understandably, the first valve tube 536 and the second valve tube 537 are made of stainless steel, which has high structural strength. The first interface 531, the second interface 532, the third interface 533 and the fourth interface 534 are made of copper and can be integrally manufactured with the valve body 535, so that the valve body 535 has good structural strength and corrosion resistance.

[0057] In some embodiments of this utility model, the first interface 531, the second interface 532, the third interface 533 and the fourth interface 534 are copper sleeves or copper plating.

[0058] It is understandable that a first interface 531, a second interface 532, a third interface 533, and a fourth interface 534 can be provided on the valve body 535 to communicate with the internal cavity of the valve body 535. A copper sleeve with high corrosion resistance can be provided at the first interface 531, the second interface 532, the third interface 533, and the fourth interface 534 to facilitate the connection of the valve pipe to the interface. Alternatively, a copper plating layer can be provided at the interface to achieve the same corrosion resistance.

[0059] In some embodiments of this utility model, the main bodies of the first pipe 541, the second pipe 542, the third pipe 543, and the fourth pipe 544 are all made of stainless steel. The first peripheral surface of the portion of the first pipe 541 that is inserted into the first interface 531 is made of copper. The second peripheral surface of the portion of the second pipe 542 that is inserted into the second interface 532 is made of copper. The third peripheral surface of the portion of the third pipe 543 that is inserted into the third interface 533 is made of copper. The fourth peripheral surface of the portion of the fourth pipe 544 that is inserted into the fourth interface 534 is made of copper.

[0060] Understandably, the main bodies of the first conduit 541, the second conduit 542, the third conduit 543, and the fourth conduit 544 can be made of stainless steel, resulting in high structural strength, resistance to bending, and good corrosion resistance. Alternatively, the peripheral surfaces of the insertion interfaces of the first conduit 541, the second conduit 542, the third conduit 543, and the fourth conduit 544 can be made of copper, matching the materials of the first interface 531, the second interface 532, the third interface 533, and the fourth interface 534, thus improving durability and compatibility.

[0061] In some embodiments of this utility model, the first valve pipe 536 includes a first pipe section and a second pipe section arranged coaxially. The second pipe section is connected to the valve body 535 through the first pipe section. The inner diameter of the second pipe section is larger than the inner diameter of the first pipe section. A flared section 539 is formed inside the second pipe section. The first interface 531, the second interface 532, and the third interface 533 are respectively disposed in the corresponding flared section 539.

[0062] It is understandable that the first valve pipe 536 can be made into a flared section 539 by stamping a pipe structure, so that the inner diameter of the second pipe section is larger than that of the first pipe section, and the inner diameter of the first pipe section is consistent with the inner diameter of the first pipe 541, the second pipe 542 and the third pipe 543, in order to reduce flow resistance and increase the connection area between the first pipe 541, the second pipe 542 and the third pipe 543 and the first valve pipe 536, thereby improving the connection reliability.

[0063] In some embodiments of this utility model, the outdoor unit 1 further includes a housing 10, which forms a receiving cavity. The outdoor heat exchanger 61, the compressor 51, and the four-way valve assembly 53 are all disposed in the receiving cavity, and the gas-side valve assembly 55 is detachably installed on the housing 10.

[0064] It is understandable that the enclosure 10 is rectangular in shape and is formed by the top cover, chassis, left side plate, right side plate 132 and panel. The enclosure 10 houses the various components of the outdoor unit 1. The air side valve assembly 55 is usually installed on the right side plate 132 for easy installation and maintenance. The air side valve assembly 55 can be fixed to the right side plate 132 by bolts, so that the air side valve assembly 55 can be disassembled together with the four-way valve assembly 53.

[0065] In some embodiments of this utility model, the housing 10 includes a right side plate 132 and a valve mounting plate 551. The right side plate 132 is provided with a mounting port, and the valve mounting plate 551 covers the mounting port. The air-side valve assembly 55 is detachably mounted on the valve mounting plate 551.

[0066] Understandably, an installation port can be provided on the right side plate 132 for convenient installation and maintenance. The valve mounting plate 551 is flat and fits the installation port. The valve mounting plate 551 can be snapped or fixed to the right side plate 132 by bolts. The valve mounting plate 551 can be provided with notches or through holes so that the air-side valve assembly 55 can be snapped into the notch or passed through the through hole and then detachably connected to the valve mounting plate 551 by bolts. When it is necessary to disassemble the four-way valve assembly 53, the air-side valve assembly 55 can be removed or disassembled together with the valve mounting plate 551. Then, the three unidirectional interfaces of the four-way valve assembly 53 are cut off, and the four-way valve assembly 53 is lifted off. Finally, the four-way valve assembly 53 and the air-side valve assembly 55 are disassembled together.

[0067] The second aspect of this utility model provides a heating, ventilation and air conditioning (HVAC) device, including the outdoor unit 1 proposed in the first aspect of this utility model.

[0068] The outdoor unit 1 of the HVAC equipment proposed in the second aspect of this utility model sets the three interfaces of the four-way valve assembly 53 connecting the outdoor heat exchanger 61 and the compressor 51 to face the same direction. Since the outdoor heat exchanger 61 and the compressor 51 connected by these three interfaces are inconvenient to disassemble together with the four-way valve assembly 53, when it is necessary to repair the four-way valve assembly 53, the three interfaces of the four-way valve assembly 53 facing the same direction can be cut off, and the gas side valve assembly 55, which is convenient to disassemble together with the four-way valve assembly 53, can be disassembled as a whole, thereby improving the disassembly efficiency and convenience of the four-way valve assembly 53.

[0069] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An outdoor unit characterized by comprising: include: Outdoor heat exchanger; The compressor has an exhaust port and a return port; Gas-side valve assembly and liquid-side valve assembly, wherein the liquid-side valve assembly is connected to the outdoor heat exchanger; The four-way valve assembly has a first interface, a second interface, a third interface, and a fourth interface that are interconnected. The first interface is connected to the heat exchanger, the second interface is connected to the return gas interface, the third interface is connected to the gas-side valve assembly, and the fourth interface is connected to the exhaust interface. The first interface, the second interface, the third interface, and the fourth interface are oriented in the same direction.

2. The outdoor unit according to claim 1, characterized by Along the height direction of the outdoor unit, the first interface, the second interface, the third interface and the fourth interface are all arranged downwards.

3. The outdoor unit according to claim 2, characterized by The outdoor unit further includes a first pipe, a second pipe, a third pipe, and a fourth pipe. One end of the first pipe is welded to the first interface from bottom to top, and the other end of the first pipe is connected to the outdoor heat exchanger. One end of the second pipe is welded to the second interface from bottom to top, and the other end of the second pipe is connected to the return gas interface. One end of the third pipe is welded to the third interface from bottom to top, and the other end of the third pipe is connected to the gas-side valve assembly. One end of the fourth pipe is welded to the fourth interface from bottom to top, and the other end of the fourth pipe is connected to the exhaust interface.

4. The outdoor unit according to claim 1, characterized by The four-way valve assembly includes a valve body, which is cylindrical and has a movable switch that can switch between a cooling mode and a heating mode. When the switch is in cooling mode, the first port is connected to the fourth port and the second port is connected to the third port. When the switch is in heating mode, the first port is connected to the second port and the third port is in fluid communication with the fourth port.

5. The outdoor unit according to claim 4, characterized by The outdoor unit further includes a first pipe, a second pipe, and a third pipe. The first interface is connected to the outdoor heat exchanger through the first pipe, the second interface is connected to the return gas interface through the second pipe, and the third interface is fluidly connected to the gas-side valve assembly through the third pipe. The four-way valve assembly further includes three first valve pipes, which are arranged in a row along the longitudinal direction of the valve body. Each first valve pipe has two opposing ports. One port of each of the three first valve pipes is inserted into the valve body from the lower circumference side. The other port of each of the three first valve pipes forms a downward-facing first interface, a second interface, and a third interface, respectively. The first pipe, the second pipe, and the third pipe are respectively inserted into the first interface, the second interface, and the third interface from bottom to top.

6. The outdoor unit according to claim 5, characterized by The outdoor unit also includes a fourth pipe, and the fourth interface is connected to the exhaust interface via the fourth pipe. The four-way valve assembly also includes a U-shaped second valve pipe with two opposing ports. One port of the second valve pipe is inserted into the valve body from the upper side of the valve body, and the other port of the second valve pipe forms the downward-facing fourth interface. The fourth pipe is inserted into the fourth interface from bottom to top.

7. The outdoor unit according to claim 6, characterized by The main bodies of the three first valve tubes and the second valve tubes are all made of stainless steel, and the first interface, the second interface, the third interface and the fourth interface are made of copper. The copper first interface, the second interface and the third interface are respectively disposed on the tube wall of the corresponding main body of the first valve tube, and the fourth interface is disposed on the tube wall of the main body of the second valve tube.

8. The outdoor unit according to claim 7, characterized by The first interface, the second interface, the third interface, and the fourth interface are copper sleeves or copper plating.

9. The outdoor unit according to claim 8, characterized by The main bodies of the first pipe, the second pipe, the third pipe, and the fourth pipe are all made of stainless steel. The first circumference of the portion of the first pipe inserted into the first interface is made of copper, the second circumference of the portion of the second pipe inserted into the second interface is made of copper, the third circumference of the portion of the third pipe inserted into the third interface is made of copper, and the fourth circumference of the portion of the fourth pipe inserted into the fourth interface is made of copper.

10. The outdoor unit according to claim 6, characterized by The main body of the first valve pipe includes a first pipe section and a second pipe section arranged coaxially. The second pipe section is connected to the valve body through the first pipe section. The inner diameter of the second pipe section is larger than the inner diameter of the first pipe section. A flared section is formed inside the second pipe section. The first interface, the second interface, and the third interface are respectively disposed in the corresponding flared sections.

11. The outdoor unit according to any one of claims 1 to 10, characterized by The outdoor unit also includes a housing, in which a receiving cavity is formed. The heat exchanger, the compressor, and the four-way valve assembly are all disposed in the receiving cavity, and the gas-side valve assembly is detachably installed on the housing.

12. The outdoor unit according to claim 11, characterized by The housing includes a right side plate and a valve mounting plate. The right side plate has a mounting opening, and the valve mounting plate covers the mounting opening. The gas-side valve assembly is detachably mounted on the valve mounting plate.

13. A heating and ventilation device, characterized in that Includes an outdoor unit, wherein the outdoor unit is the outdoor unit according to any one of claims 1 to 12.

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