Refrigerant switching device and HVAC equipment

Abstract

This application discloses a refrigerant switching device and HVAC equipment. The refrigerant switching device includes a housing and a drainage assembly. The housing includes a top seat and a base. The top seat forms a receiving cavity and has a bottom opening and a side opening communicating with the receiving cavity. The base is located at the bottom opening and connected to the top seat, and has a water collection trough communicating with the receiving cavity. The drainage assembly is located at the side opening and installed on the top seat. The drainage assembly allows condensate collected in the water collection trough to be discharged from the refrigerant switching device, and the drainage assembly is connected to an external pipeline to discharge the condensate in the water collection trough to a designated area. The drainage assembly is designed to be installed at the side opening of the housing, making it easier for operators to access and facilitating its installation and removal. Furthermore, the drainage assembly is connected to the top seat, so that when the base is disassembled from the top seat and the base is lowered, the drainage assembly connected to the top seat will not be affected.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and in particular to a refrigerant switching device and HVAC equipment. Background Technology

[0002] In multi-split air conditioning systems, refrigerant is typically transferred between heat source units and load units via a refrigerant switching device, allowing one heat source unit to work simultaneously with multiple load units. This refrigerant switching device includes a housing and a piping main body housed within the housing. The piping main body includes a reversing valve, piping, and a pressure vessel.

[0003] The pipeline contains refrigerant. When the refrigerant inside the pipeline alternates between hot and cold, condensation is easily generated. The condensation drips onto the water collection tray at the bottom of the device, and the condensation needs to be drained from inside the device to the outside. Utility Model Content

[0004] This application provides a refrigerant switching device and HVAC equipment for discharging condensate from inside the device to the outside.

[0005] This application provides a refrigerant switching device, including: The housing includes a top seat and a base. The top seat forms a receiving cavity and has a bottom opening and a side opening communicating with the receiving cavity. The base is located at the bottom opening and connected to the top seat, and the base forms a water receiving groove communicating with the receiving cavity; and... Drainage assembly, located at the side opening and mounted on the top mount.

[0006] In some embodiments, the top seat includes: Top slab; and, Multiple side panels are located below the top plate and connected to the outer periphery of the top plate. The multiple side panels and the top plate enclose a receiving cavity. One side panel is provided with a side opening, and a drainage component is installed on one of the side panels.

[0007] In some embodiments, the drainage assembly includes: Mounting bracket, which covers the side opening and is connected to the top seat, and has a through hole communicating with the receiving cavity; A water pump, the water pump being located within a housing and mounted on a mounting bracket; and, The drain pipe passes through the through hole, with one end inside the casing and connected to the water pump, and the other end outside the casing.

[0008] In some embodiments, the water pump includes: Pump body, the pump body is mounted on the mounting bracket; The inlet pipe is located below the pump body and is connected to the pump body; the inlet pipe extends into the water receiving tank; and, The water outlet pipe is located on the side of the pump body and is connected to the pump body. The water outlet pipe is connected to the drain pipe.

[0009] In some embodiments, the bottom wall of the water receiving tank is recessed below the water inlet pipe to form a groove into which the water inlet pipe extends.

[0010] In some embodiments, the mounting bracket includes: The first mounting plate is located inside the housing and is positioned opposite to the bottom wall of the water receiving tank. The pump body is located on the side of the first mounting plate near the bottom wall and is mounted on the first mounting plate.

[0011] In some embodiments, the mounting bracket includes: A first frame, the first frame covering a side opening and connected to a top base, the first frame being provided with a first through hole, the through hole including a first through hole; and... The second frame is located inside the outer shell. The second frame includes a first mounting plate and a second mounting plate. The second mounting plate is attached to and installed on the first frame. The first mounting plate and the second mounting plate are set at an angle and connected to the second mounting plate.

[0012] In some embodiments, the second frame also includes: A first folding plate, a second mounting plate located above the first mounting plate, and the first folding plate located below and connected to the first mounting plate; and, The second folding plate is located below the first mounting plate and connected to the first folding plate. The second folding plate is fitted to the first frame and installed on the first frame.

[0013] In some embodiments, the second frame is a one-piece molded structure.

[0014] In some embodiments, the second mounting plate is provided with a second via corresponding to the first via, the via including the second via.

[0015] In some embodiments, the drainage assembly further includes: The water level detector is located in the receiving cavity and its detection body is mounted on the mounting frame. The detection probe of the water level detector extends into the water receiving tank.

[0016] In some embodiments, it also includes: The controller is electrically connected to the water level detector and the water pump. It is used to control the water pump to start when the water level detected by the water level detector reaches the first water level, and to control the refrigerant switching device to stop when the water level detected by the water level detector reaches the second water level, wherein the second water level is higher than the first water level.

[0017] In some embodiments, the mounting bracket has an observation hole that communicates with the containment cavity and is located above the second water level.

[0018] In some embodiments, the drainage assembly further includes: The cover conceals the observation hole and is detachably connected to the mounting bracket.

[0019] In some embodiments, it also includes: The refrigerant switching pipeline includes a pipeline body, a heat source interface pipe group connected to the pipeline body, and multiple load interface pipe groups connected to the pipeline body. The pipeline body is located inside the housing and connected to the top bracket; the heat source interface pipe group and multiple load interface pipe groups pass through the housing and are located outside the housing.

[0020] In some embodiments, the housing has a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction, wherein the first direction and the second direction are perpendicular to the height direction of the refrigerant switching device. The load interface pipe assembly is located on the second side of the housing, while the heat source interface pipe assembly and side opening are located on the third side of the housing.

[0021] In some embodiments, the refrigerant switching pipeline also includes an expansion interface pipe assembly connected to the pipeline body, the expansion interface pipe assembly passing through the housing and located outside the housing, the expansion interface pipe assembly being located on the fourth side of the housing.

[0022] Secondly, embodiments of this application also provide a heating, ventilation, and air conditioning (HVAC) device, including: The aforementioned refrigerant switching device; Heat source, heat source connection to heat source interface pipe assembly; and, Multiple loads, each load is connected to a corresponding load interface group.

[0023] The refrigerant switching device and HVAC equipment of this application embodiment are equipped with a drainage component to discharge condensate collected in the water tank from the refrigerant switching device. The drainage component is connected to an external pipeline to discharge the condensate from the water tank to a designated area. The drainage component is designed to be installed at a side opening of the housing, allowing it to be positioned on the side of the housing for easier access by operators and facilitating easier assembly and disassembly. Furthermore, the drainage component is connected to the top mount, so that when the chassis is disassembled from the top mount and the chassis is lowered, the drainage component connected to the top mount will not be affected. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 These are schematic diagrams of the structure of HVAC equipment provided in some embodiments of this application; Figure 2 This is a partial structural schematic diagram of a refrigerant switching device provided in some embodiments of this application; Figure 3 yes Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 yes Figure 2 A partial side view of the refrigerant switching device is shown; Figure 5 yes Figure 2 A partial side view of the refrigerant switching device is shown; Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point B; Figure 7 yes Figure 6 A schematic diagram of a partial explosion of the refrigerant switching device is shown. Figure 8 yes Figure 6 A partial explosion diagram of the refrigerant switching device is shown.

[0026] Explanation of reference numerals in the attached figures: 1. Outer shell; 1a. First side; 1b. Second side; 1c. Third side; 1d. Fourth side; 10. Top plate; 11. Side plate; 11a. First side plate; 11b. Second side plate; 11c. Third side plate; 11d. Fourth side plate; 112. Receiving cavity; 113. Bottom opening; 114. Side opening; 12. Top plate; 20. Chassis; 24. Water inlet; 241. Groove; 25. Top opening; 2. Refrigerant switching device; 201. Refrigerant switching pipeline; 202. Heat source interface pipe assembly; 203. Load interface pipe assembly; 204. Expansion interface pipe assembly; 205. Pipeline body; 3. HVAC equipment; 4. Heat source; 5. Load; 6. Drainage components; 601. Mounting bracket; 6011. Through hole; 6011a. First through hole; 6011b. Second through hole; 6012. First frame; 6013. Second frame; 6014. First mounting plate; 6015. Second mounting plate; 6016. First folding plate; 6017. Second folding plate; 6018. Observation hole; 6018a. Clearance hole; 6019. Flanged edge; 6010. Connecting lug; 602, Water pump; 6021, Pump body; 6022, Inlet pipe; 6023, Outlet pipe; 603. Drainage pipe; 604. Water level detector; 6041. Detection body; 6042. Detection probe; 605. Cover body; 6051. Cover plate; 6052. Enclosure plate; 6053. Connecting protrusion; x, first direction; y, second direction; z, altitude direction. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0028] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] Please see Figure 1 This application provides a heating, ventilation, and air conditioning (HVAC) system 3, which includes a refrigerant switching device 2, a heat source 4, and multiple loads 5. The refrigerant switching device 2 connects the heat source 4 and the multiple loads 5, enabling one heat source 4 to drive multiple loads 5. The refrigerant switching device 2 allows some loads 5 to be in a cooling state while others are in a heating state, rather than all loads 5 being in either a cooling or heating state simultaneously, thus meeting diverse usage needs.

[0030] Next, see Figures 1 to 8 The refrigerant switching device 2 is described in detail.

[0031] The refrigerant switching device 2 includes a housing 1, which is generally rectangular in shape and has a first side 1a and a second side 1b opposite each other along a first direction x, and a third side 1c and a fourth side 1d opposite each other along a second direction y, wherein the first direction x and the second direction y are perpendicular to the height direction z of the housing 1.

[0032] The outer casing 1 includes a top seat 10 and a chassis 20. The top seat 10 forms a receiving cavity 112 and has a bottom opening 113 communicating with the receiving cavity 112. The chassis 20 is located at the bottom opening 113 and connected to the top seat 10. The top seat 10 and the chassis 20 are distributed along the height direction z of the outer casing 1.

[0033] The top seat 10 includes a top plate 12 and a plurality of side plates 11. The plurality of side plates 11 are located below the top plate 12 and connected to the outer periphery of the top plate 12. The plurality of side plates 11 and the top plate 12 enclose a receiving cavity 112. The plurality of side plates 11 form a bottom opening 113 on the side away from the top plate 12.

[0034] The plurality of side plates 11 include a first side plate 11a located on a first side 1a, a second side plate 11b located on a second side 1b, a third side plate 11c located on a third side 1c, and a fourth side plate 11d located on a fourth side 1d.

[0035] In the plurality of side panels 11, at least one side panel 11 and the chassis 20 are detachably connected via a disassembly / assembly component (not shown in the figure). In some embodiments, some of the side panels 11 and the chassis 20 are detachably connected via a disassembly / assembly component; in another exemplary embodiment, all the side panels 11 and the chassis 20 are detachably connected via a disassembly / assembly component. In the embodiments of this application, the second side panel 11b, the third side panel 11c, and the fourth side panel 11d are detachably connected to the chassis 20 via a disassembly / assembly component. This increases the number of connection points between the top seat 10 and the chassis 20, ensuring the reliability of the connection between them. Furthermore, during disassembly and assembly, the operator can complete the disassembly and assembly of all disassembly / assembly components approximately at the second side 1b of the housing 1 without changing positions, making disassembly and assembly more convenient.

[0036] The top seat 10 is provided with a side opening 114 communicating with the receiving cavity 112. Among the plurality of side plates 11, one side plate 11 is provided with the side opening 114. In this embodiment of the application, the side opening 114 is located on the third side 1c of the outer shell 1, that is, the third side plate 11c is provided with the side opening 114.

[0037] The inner wall of the top seat 10 is provided with a top insulation layer. This top insulation layer reduces the efficiency of temperature transfer between the inside and outside of the top seat 10. Therefore, when the temperature inside the receiving cavity 112 is very low, the temperature outside the top seat 10 will not be very low, and the air outside the top seat 10 is less likely to condense and drip due to cold air. In some embodiments, the inner walls of both the top plate 12 and the side plate 11 are provided with a top insulation layer. The top insulation layer can be insulating sponge, etc., and is not limited thereto.

[0038] The chassis 20 has a water collection trough 24 that communicates with the receiving cavity 112. For example, the top of the chassis 20 is provided with a top opening 25 that communicates with the water collection trough 24, and the top opening 25 communicates with the bottom opening 113, so that the water collection trough 24 communicates with the receiving cavity 112. The water collection trough 24 is provided so that when the refrigerant switching pipe 201 is installed in the housing 1, the condensate generated on the outer surface of the pipe body 205 inside the housing 1 can drip into the water collection trough 24 of the chassis 20, preventing the condensate from dripping onto the ground.

[0039] The bottom wall of the water collection tank 24 is partially concave to form a groove 241. This allows condensate in the water collection tank 24 to collect in the groove 241, facilitating more thorough drainage of the condensate. This will be explained in more detail below.

[0040] The chassis 20 includes an outer plate, an inner plate, and a first insulation layer. The inner plate is disposed inside the outer plate and spaced apart from it. The inner plate forms a water-receiving groove 24, and the top of the inner plate has a top opening 25 communicating with the water-receiving groove 24. The first insulation layer fills the space between the inner plate and the outer plate. The inner plate forms the water-receiving groove 24, which can collect condensate generated on the outer surface of the inner pipe body 205 of the outer casing 1. The first insulation layer can reduce the temperature transfer efficiency between the inside and outside of the chassis 20. Thus, when the temperature inside the chassis 20 is very low, the temperature outside the chassis 20 will not be very low, and the air outside the chassis 20 is less likely to condense and drip due to cold air. The first insulation layer can be made of insulating sponge, etc., and is not limited thereto. The outer plate ensures the external structural strength of the chassis 20.

[0041] In the chassis 20, the outer plate and the top plate 10 are detachably connected via a disassembly assembly. This avoids the need for mounting positions or other structures on the inner plate, ensuring the integrity of the water collection tank 24 and preventing condensate leakage. In some embodiments, the outer side plate of the outer plate and the top plate 10 are detachably connected via a disassembly assembly.

[0042] The refrigerant switching device 2 also includes a drain assembly 6, which is located at the side opening 114 and connected to the top mount 10. The drain assembly 6 allows condensate collected in the water tank 24 to be discharged from the refrigerant switching device 2, and the drain assembly 6 is externally connected to a pipeline to discharge the condensate in the water tank 24 to a designated area. The drain assembly 6 is designed to be installed at the side opening 114 of the housing 1, making it easier for operators to access and facilitating its installation and removal. Furthermore, the drain assembly 6 is connected to the top mount 10, so that when the chassis 20 is disassembled from the top mount 10 and the chassis 20 is lowered, the drain assembly 6 connected to the top mount 10 will not be affected.

[0043] The drainage component 6 is installed in one of the side plates 11 (e.g., the third side plate 11c) of the top seat 10, which has a side opening 114. The drainage component 6 passes through the side opening 114 of one of the side plates 11 and is installed on that side plate 11, which helps to simplify the installation path.

[0044] The drainage assembly 6 includes a mounting bracket 601, a water pump 602, and a drain pipe 603. The mounting bracket 601 covers the side opening 114 and is connected to the top seat 10 (e.g., the third side plate 11c). The mounting bracket 601 is provided with a through hole 6011 that communicates with the receiving cavity 112. The water pump 602 is located inside the housing 1 and is mounted on the mounting bracket 601. The drain pipe 603 passes through the through hole 6011. One end of the drain pipe 603 is located inside the housing 1 and communicates with the water pump 602, and the other end is located outside the housing 1.

[0045] Mounting bracket 601 is used for mounting and fixing the drainage assembly 6 to the housing 1. Water pump 602 generates power to discharge condensate from the water collection tank 24 through drain pipe 603. Both water pump 602 and drain pipe 603 in the drainage assembly 6 are mounted on mounting bracket 601. This modular design facilitates assembly and disassembly with the housing 1, making assembly and disassembly more convenient. For example, the drainage assembly 6 can be integrally installed into the housing 1 through side opening 114, allowing the drain pipe 603 and water pump 602 to be installed, or the drainage assembly 6 can be removed through side opening 114.

[0046] Mounting bracket 601 includes a first frame 6012 and a second frame 6013. The first frame 6012 covers the side opening 114 and is connected to the top seat 10. The first frame 6012 is provided with a first through hole 6011a, and the through hole 6011 includes the first through hole 6011a. The second frame 6013 is located inside the housing 1 and is installed on the first frame 6012. The water pump 602 is installed on the second frame 6013. The design of mounting bracket 601, including the first frame 6012 and the second frame 6013, allows for more flexible relative positioning of the first frame 6012 and the second frame 6013, making it easier to meet installation requirements.

[0047] The first frame 6012 can be roughly plate-shaped, and the shape of the first frame 6012 can be roughly adapted to the side opening 114 to cover the side opening 114.

[0048] The first frame 6012 is connected to a connecting ear 6010, which is located outside the outer shell 1 and fits against the top seat 10. Thus, by connecting the connecting ear 6010 to the top seat 10 (e.g., the third side plate 11c), the first frame 6012 and the top seat 10 can be connected. Furthermore, since the connecting ear 6010 is located outside the outer shell 1 and fits against the top seat 10, it can also limit the assembly of the first frame 6012 and the top seat 10.

[0049] The first frame 6012 can be connected to one connecting ear 6010 or multiple connecting ears 6010. If the first frame 6012 is connected to multiple connecting ears 6010, the multiple connecting ears 6010 can be distributed at intervals on the outer periphery of the first frame 6012, such as connecting ears 6010 being connected to different sides of the first frame 6012, thereby improving the reliability of the connection between the first frame 6012 and the top seat 10.

[0050] The connecting ear 6010 and the top seat 10 can be connected by means of screws or other methods, and there is no limitation on this.

[0051] The edge of the first frame 6012 is connected to a flange 6019, which is located outside the outer shell 1.

[0052] The first frame 6012, connecting ear 6010, and flange 6019 can be integrally formed. For example, a piece of sheet metal can be cut, bent, or processed to form the first frame 6012, connecting ear 6010, and flange 6019 in different parts. In this case, compared to an unbent sheet metal, the flange 6019 reduces the size of the part that fits with the top seat 10, lowers the process design requirements, and reduces production costs.

[0053] The second frame 6013 includes a first mounting plate 6014, which is located inside the outer casing 1 and is positioned opposite to the bottom wall of the water receiving tank 24. At this time, the first mounting plate 6014 is approximately horizontal.

[0054] The first mounting plate 6014 has through holes, which helps to reduce the weight of the first mounting plate 6014.

[0055] The second frame 6013 includes a second mounting plate 6015, which is fitted and installed on the first frame 6012. A first mounting plate 6014 is angled to and connected to the second mounting plate 6015. The second mounting plate 6015 is used for mounting the second frame 6013 to the first frame 6012, and the first mounting plate 6014 can be used for mounting and fixing the water pump 602.

[0056] The second mounting plate 6015 and the first mounting plate 6014 can be approximately perpendicular.

[0057] The second mounting plate 6015 is located above the first mounting plate 6014.

[0058] The second mounting plate 6015 is provided with a second through hole 6011b corresponding to the first through hole 6011a, and the through hole 6011 includes the second through hole 6011b. That is, the drain pipe 603 passes through the first through hole 6011a of the first frame 6012 and the second through hole 6011b of the second mounting plate 6015.

[0059] The second mounting plate 6015 and the first frame 6012 can be connected by means of screws or other methods, and there are no restrictions on this.

[0060] The second frame 6013 also includes a first folding plate 6016 and a second folding plate 6017. The first folding plate 6016 is located below and connected to the first mounting plate 6014. The second folding plate 6017 is located below the first mounting plate 6014 and connected to the first folding plate 6016. The second folding plate 6017 is fitted to and installed on the first frame 6012. Thus, the second frame 6013 is connected to the first frame 6012 from above via the second mounting plate 6015, and to the first frame 6012 from below via the second folding plate 6017, which helps improve the reliability of the connection between the first frame 6012 and the second frame 6013.

[0061] The second frame 6013 is a one-piece molded structure. For example, a sheet of material is bent or otherwise processed to form different parts of the first mounting plate 6014, the second mounting plate 6015, the first folded plate 6016, and the second folded plate 6017.

[0062] The water pump 602 includes a pump body 6021, an inlet pipe 6022, and an outlet pipe 6023. The pump body 6021 is mounted on a mounting bracket 601. The inlet pipe 6022 is located below the pump body 6021 and communicates with it, extending into a water receiving tank 24. The outlet pipe 6023 is located to the side of the pump body 6021 and communicates with it, connecting to a drain pipe 603. The design of the inlet pipe 6022 being located below the pump body 6021 facilitates its extension into the water receiving tank 24, eliminating the need for additional piping on the inlet pipe 6022 and simplifying the structure. The design of the outlet pipe 6023 being located to the side of the pump body 6021 facilitates its connection to the drain pipe 603.

[0063] The inlet pipe 6022 is a rigid pipe, so after the drainage component 6 is assembled, the inlet pipe 6022 will also be assembled, which is more convenient than the flexible pipe design.

[0064] The inlet pipe 6022 is located above the groove 241 on the bottom wall of the water receiving tank 24 and extends into the groove 241. Since the condensate in the water receiving tank 24 will converge towards the groove 241, the design of the inlet pipe 6022 extending into the groove 241 is to facilitate more thorough drainage of the condensate in the water receiving tank 24.

[0065] The water pump 602 is located on the side of the first mounting plate 6014 near the bottom wall and is mounted on the first mounting plate 6014. That is, the pump body 6021 is mounted below the first mounting plate 6014 to facilitate the connection of its water inlet pipe 6022 with the water receiving tank 24 extending below. The water pump 602 is mounted on the first mounting plate 6014 via the pump body 6021.

[0066] The outlet pipe 6023 is a rigid pipe so that it can be connected to the drain pipe 603.

[0067] The drainage assembly 6 also includes a water level detector 604. The water level detector 604 is located in the receiving cavity 112, and its detection body 6041 is mounted on the mounting bracket 601. The detection probe 6042 of the water level detector 604 extends into the water receiving tank 24. Mounting the detection body 6041 of the water level detector 604 on the mounting bracket 601 enables a modular design of the drainage assembly 6, facilitating its assembly into a single unit and its integration with the outer casing 1, making assembly and disassembly more convenient. Extending the detection probe 6042 of the water level detector 604 into the water receiving tank 24 facilitates the detection of the water level of the condensate collected in the water receiving tank 24.

[0068] The water level detector 604 and the water pump 602 can be electrically connected to the controller. When the water level detected by the water level detector 604 reaches the first water level, the controller can control the water pump 602 to start, so as to discharge the condensate in the water receiving tank 24 in a timely manner. The first water level can be designed according to actual needs and is not limited thereto.

[0069] If the water level detected by probe 6042 reaches the second water level, which is higher than the first water level, the controller can shut down the refrigerant switching device 2. At this time, the operator can inspect the drainage assembly 6 to check for malfunctions in the water pump 602 or the water level detector 604. The second water level can be designed according to actual needs and is not limited thereto.

[0070] An observation hole 6018 communicating with the receiving cavity 112 is formed on the mounting bracket 601, and the observation hole 6018 is located above the second water level. Thus, when the water level in the water receiving tank 24 reaches the second water level, the operator can inspect the drainage assembly 6 through the observation hole 6018, observe the water level in the water receiving tank 24, and check for malfunctions in the water pump 602 or the water level detector 604. Furthermore, because the observation hole 6018 is located above the second water level, condensate in the water receiving tank 24 will not overflow from the observation hole 6018.

[0071] The mounting bracket 601 is also provided with a plurality of clearance holes 6018a communicating with the observation hole 6018, and the plurality of clearance holes 6018a are distributed circumferentially at intervals in the observation hole 6018.

[0072] The drainage assembly 6 also includes a cover 605, which covers the observation hole 6018 and is detachably connected to the mounting bracket 601. The cover 605 is connected to the mounting bracket 601 and can be assembled and disassembled together with the housing 1 along with the mounting bracket 601.

[0073] The cover 605 includes a cover plate 6051, a surrounding plate 6052, and a plurality of connecting protrusions 6053. The cover plate 6051 covers the observation hole 6018 and is located on the outside of the mounting frame 601. The first surface of the cover plate 6051 is in contact with the first frame 6012 of the mounting frame 601. The surrounding plate 6052 is connected to the first surface of the cover plate 6051 and protrudes from the first surface. The surrounding plate 6052 extends into the observation hole 6018 and is in contact with the inner wall of the observation hole 6018. The plurality of connecting protrusions 6053 are spaced apart on the periphery of the surrounding plate 6052, and the connecting protrusions 6053 are connected to the outer wall of the surrounding plate 6052 and protrude from the outer wall of the surrounding plate 6052. When installing the cover 605 onto the mounting bracket 601, the connecting protrusion 6053 on the enclosure plate 6052 can be inserted into the clearance hole 6018a, with the connecting protrusion 6053 located inside the first bracket 6012. Then, the cover 605 can be twisted to offset the connecting protrusion 6053 from the clearance hole 6018a, thus preventing the cover 605 from falling off the mounting bracket 601.

[0074] The refrigerant switching device 2 includes a refrigerant switching pipeline 201, which is installed on the outer casing 1, realizing the modular design of the refrigerant switching device 2, which is convenient for installation and transportation.

[0075] See again Figure 1 and Figure 2 The refrigerant switching pipeline 201 also includes a pipeline body 205, a heat source interface pipe assembly 202 connected to the pipeline body 205, and multiple load interface pipe assemblies 203 connected to the pipeline body 205. The pipeline body 205 is located inside the outer casing 1. The heat source interface pipe assembly 202 and the multiple load interface pipe assemblies 203 pass through the outer casing 1 and are located outside the outer casing 1. The heat source interface pipe assembly 202 is connected to a heat source 4, and the multiple load interface pipe assemblies 203 are connected one-to-one to multiple loads 5. In the refrigerant switching pipeline 201, the pipeline body 205 is mounted on the top mount 10, so that when the chassis 20 is disassembled from the top mount 10 and the chassis 20 is lowered, the pipeline body 205 will not be affected.

[0076] The refrigerant switching pipeline 201 also includes an expansion interface pipe assembly 204 connected to the pipeline body 205. The expansion interface pipe assembly 204 passes through the outer casing 1 and is located outside the outer casing 1. The expansion interface pipe assembly 204 can be used to connect one refrigerant switching device 2 to another, thus enabling one heat source 4 to connect to multiple refrigerant switching devices 2, and each refrigerant switching device 2 to connect to at least one load 5, thereby enabling one heat source 4 to drive more loads 5.

[0077] The heat source interface pipe assembly 202 is located on the third side 1c of the outer casing 1, and the expansion interface pipe assembly 204 is located on the fourth side 1d of the outer casing 1. Designing the heat source interface pipe assembly 202 and the expansion interface pipe assembly 204 to be located on opposite third sides 1c and fourth sides 1d of the outer casing 1 reduces the number of bends in the pipe body 205 connecting the heat source interface pipe assembly 202 and the expansion interface pipe assembly 204, making the pipework simpler and easier to manufacture, and reducing the space occupied by the pipework, thereby reducing the volume of the outer casing 1.

[0078] The aforementioned load interface pipe assembly 203 is located on the second side 1b of the outer casing 1. The heat source interface pipe assembly 202, multiple load interface pipe assemblies 203, and expansion interface pipe assemblies 204 are designed to be located on different sides of the outer casing 1. On the one hand, this facilitates the arrangement of the main pipe body 205 inside the outer casing 1, reduces the number of bends, and makes the pipework simple and convenient for production. On the other hand, it helps operators to distinguish between different interface pipe assemblies, making it easy to connect to the heat source 4, load 5, refrigerant switching device 2, etc., and preventing confusion.

[0079] Specifically, the heat source interface pipe assembly 202 passes through the third side plate 11c and is located on the third side 1c of the housing 1, and the extension interface pipe assembly 204 passes through the fourth side plate 11d and is located on the fourth side 1d of the housing 1. The load interface pipe assembly 203 passes through the second side plate 11b and is located on the second side 1b of the housing 1.

[0080] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" means at least two, for example, two, three, four, etc. "And / or" describes 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, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0081] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A refrigerant switching device characterized by comprising: include: The housing includes a top seat and a base. The top seat forms a receiving cavity and has a bottom opening and a side opening communicating with the receiving cavity. The base is located at the bottom opening and connected to the top seat, and the base forms a water receiving groove communicating with the receiving cavity. as well as, A drainage assembly located at the side opening and mounted on the top seat.

2. The refrigerant switching device according to claim 1, characterized in that, The top seat includes: Top slab; and, Multiple side plates are located below the top plate and connected to the outer periphery of the top plate. The multiple side plates and the top plate enclose the receiving cavity. One side plate is provided with the side opening. The drainage assembly is installed on one of the side plates.

3. The refrigerant switching device according to claim 1, characterized in that, The drainage assembly includes: Mounting bracket, which covers the side opening and is connected to the top seat, and has a through hole communicating with the receiving cavity; A water pump, the water pump being located within the housing and mounted on the mounting bracket; and, A drain pipe passes through the through hole, with one end of the drain pipe located inside the housing and connected to the water pump, and the other end located outside the housing.

4. The refrigerant switching device according to claim 3, characterized in that, The water pump includes: Pump body, the pump body being mounted on the mounting bracket; A water inlet pipe, located below and connected to the pump body, extending into the water receiving tank; and... The water outlet pipe is located on the side of the pump body and is connected to the pump body. The water outlet pipe is connected to the drain pipe.

5. The refrigerant switching device according to claim 4, characterized in that, The bottom wall of the water receiving tank is recessed below the water inlet pipe to form a groove, into which the water inlet pipe extends.

6. The refrigerant switching device according to claim 4, characterized in that, The mounting bracket includes: A first mounting plate is located inside the housing and is disposed opposite to the bottom wall of the water receiving tank. The pump body is located on the side of the first mounting plate near the bottom wall and is mounted on the first mounting plate.

7. The refrigerant switching device according to claim 6, characterized in that, The mounting bracket includes: A first frame, which covers the side opening and is connected to the top seat, is provided with a first through hole; and... The second frame is located inside the outer shell. The second frame includes the first mounting plate and the second mounting plate. The second mounting plate is attached to and installed on the first frame. The first mounting plate and the second mounting plate are arranged at an angle and connected to the second mounting plate.

8. The refrigerant switching device according to claim 7, characterized in that, The second frame also includes: A first folding plate, a second mounting plate located above the first mounting plate, the first folding plate located below the first mounting plate and connected to the first mounting plate; and, The second folding plate is located below and connected to the first mounting plate, and is fitted to and installed on the first frame.

9. The refrigerant switching device according to claim 8, characterized in that, The second frame is a one-piece molded structure.

10. The refrigerant switching device according to claim 7, characterized in that, The second mounting plate is provided with a second via corresponding to the first via, and the via includes the second via.

11. The refrigerant switching device according to any one of claims 3 to 10, characterized in that, The drainage assembly also includes: A water level detector is located in the receiving cavity and its detection body is mounted on the mounting frame, with the detection probe of the water level detector extending into the water receiving tank.

12. The refrigerant switching device according to claim 11, characterized in that, Also includes: The controller is electrically connected to the water level detector and the water pump, and is used to control the water pump to start when the water level detected by the water level detector reaches a first water level, and to control the refrigerant switching device to stop when the water level detected by the water level detector reaches a second water level, wherein the second water level is higher than the first water level.

13. The refrigerant switching device according to claim 12, characterized in that, The mounting bracket has an observation hole that communicates with the receiving cavity, and the observation hole is located above the second water level.

14. The refrigerant switching device according to claim 13, characterized in that, The drainage assembly also includes: A cover that covers the observation hole and is detachably connected to the mounting bracket.

15. The refrigerant switching device according to claim 1, characterized in that, Also includes: The refrigerant switching pipeline includes a pipeline body, a heat source interface pipe group connected to the pipeline body, and multiple load interface pipe groups connected to the pipeline body. The pipeline body is located inside the housing and connected to the top seat. The heat source interface pipe group and the multiple load interface pipe groups pass through the housing and are located outside the housing.

16. The refrigerant switching device according to claim 15, characterized in that, The outer casing has a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction. The first direction and the second direction are perpendicular to the height direction of the refrigerant switching device. The load interface pipe assembly is located on the second side of the housing, and the heat source interface pipe assembly and the side opening are located on the third side of the housing.

17. The refrigerant switching device according to claim 16, characterized in that, The refrigerant switching pipeline also includes an expansion interface pipe assembly connected to the main body of the pipeline. The expansion interface pipe assembly passes through the outer casing and is located outside the outer casing. The expansion interface pipe assembly is located on the fourth side of the outer casing.

18. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, include: The refrigerant switching device according to any one of claims 1 to 17; A heat source, wherein the heat source is connected to the heat source interface pipe assembly; as well as, Multiple loads, each load being connected to a corresponding load interface group.

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