Water module and heat pump system

Abstract

The application relates to a water module and a heat pump system, the water module comprising a shell, an expansion tank, a plate heat exchanger assembly, a water pump and an electrical component box arranged in the shell, the plate heat exchanger assembly being connected with a water pipe and a refrigerant pipe, the water pipe being connected with the water pump, the electrical component box comprising oppositely arranged back plates and front covers, a first water blocking structure and a second water blocking structure being arranged on the side of the electrical component box facing the water pump, the first water blocking structure being connected with the back plates and extending towards the front covers, the second water blocking structure being connected with the front covers and extending towards the side of the back plates, in the direction towards the water pump, projections of the first water blocking structure and the second water blocking structure are at least partially overlapped and form a wiring channel communicating with the inside of the electrical component box. The water module and the heat pump system in the application can reduce the risk of water entering the electrical component box and improve the operation reliability.

Description

Technical Field

[0001] This application belongs to the field of heat exchange technology, and particularly relates to a water module and a heat pump system. Background Technology

[0002] A heat pump system is a system that uses air as a low-temperature heat source to obtain heat, such as for producing hot water. Typically, a heat pump system includes an outdoor unit, a water module, and user terminals. The outdoor unit includes an evaporator, compressor, and four-way valve, while the water module includes a water heat exchanger, expansion tank, and electrical control box. The outdoor unit and water module are connected via refrigerant piping to form a refrigerant circuit; the water module and user terminals are connected via water piping to form a water circuit. In the heat pump system, the refrigerant flows in the refrigerant circuit connecting the outdoor unit and the water module, while the water in the heat pump system flows in the water circuit connecting the water module and the user terminals. At the outdoor unit, the refrigerant exchanges heat with the air, and then exchanges heat with the water in the water module. The water, after heat exchange, flows to the user terminals.

[0003] However, when the water module is in a low-temperature environment, especially when the water module is placed outdoors, the water pipes may freeze and crack. Water inside the pipes may enter the electrical equipment box through the wiring section or other gaps inside the water module, posing a safety hazard. Utility Model Content

[0004] The water module and heat pump system provided in this application embodiment can effectively reduce the risk of water entering the electrical equipment box and improve operational reliability.

[0005] One embodiment of this application provides a water module, which includes a housing and an expansion tank, a heat exchanger assembly, a water pump, and an electrical component box disposed within the housing. The heat exchanger assembly is connected to water piping and refrigerant piping, and the water piping is connected to the water pump. The electrical component box includes a back panel and a front cover disposed opposite to each other. A first water-blocking structure and a second water-blocking structure are disposed on the side of the electrical component box facing the water pump. The first water-blocking structure is connected to the back panel and extends toward the front cover, and the second water-blocking structure is connected to the front cover and extends toward the side where the back panel is located. In the direction toward the water pump, the projections of the first water-blocking structure and the second water-blocking structure at least partially overlap and form a wiring channel communicating with the interior of the electrical component box between them.

[0006] In this embodiment of the water module, a first water-blocking structure and a second water-blocking structure are staggered on the side of the electrical component box facing the water pump. The wiring channel formed between the first and second water-blocking structures allows for cable routing, and provides double waterproofing at the wiring channel. Even if a water pipe breaks and water splashes out, the water is first blocked by the outermost of the first and second water-blocking structures, slowing down the splash speed or even changing its direction, reducing the risk of water entering the wiring channel. Furthermore, even if water splashes into the wiring channel, it can be blocked by the innermost of the first and second water-blocking structures, thus effectively preventing water from entering the electrical component box while achieving cable routing, improving operational reliability.

[0007] According to any embodiment of the first aspect of this application, the second water-blocking structure is at least partially disposed on the side of the first water-blocking structure facing the water pump. The second water-blocking structure includes a guide plate, which is connected to the front cover and has a guide surface extending toward the water pump. The guide surface is configured as an arc-shaped surface or an inclined surface inclined toward the side where the back plate is located, so that water splashed onto the second water-blocking structure can slide down along the inclined surface or the arc-shaped surface, thereby guiding the water away from the electrical appliance box and preventing water from entering the electrical appliance box.

[0008] According to any embodiment of the first aspect of this application, the second water-blocking structure further includes a blocking member, which is connected to the guide plate and extends toward the side where the back plate is located. The blocking member includes at least one of a second baffle and a sealing member to improve the water-blocking effect of the electrical appliance box.

[0009] According to any embodiment of the first aspect of this application, the first water-blocking structure and the back plate are integrated into one structure, which makes the structure simpler. At the same time, there is no gap between the first water-blocking structure and the back plate, which reduces the risk of water entering the water module from the gap between the first water-blocking structure and the back plate.

[0010] According to any embodiment of the first aspect of this application, the electrical component box further includes a terminal block connected to the first water-blocking structure to facilitate wiring and cable routing, thereby reducing water ingress into the electrical component box and improving cable routing convenience.

[0011] According to any embodiment of the first aspect of this application, the first water-blocking structure includes a first baffle and a mounting plate. The first baffle is connected to the back plate and extends toward the front cover. The mounting plate is connected to the side of the first baffle away from the water pump. The terminal block is fixed on the mounting plate so as to reduce the risk of water splashing onto the terminal block while the first baffle plays a water-blocking role.

[0012] According to any embodiment of the first aspect of this application, the mounting plate includes a plurality of folded plates that are bent and connected in sequence, and the terminal block fixing position is disposed on one of the folded plates, thereby adjusting the installation direction of the terminal block, which facilitates wiring and further reduces the risk of water splashing onto the terminal block, thereby improving the reliability of the water module operation.

[0013] According to any embodiment of the first aspect of this application, the housing includes a front panel and a rear panel disposed opposite to each other along its own thickness direction, with the electrical component box located on the side closer to the front panel. The water pump includes a water inlet, and in the thickness direction, the minimum distance between the edge of the first water-blocking structure facing the front cover and the front panel is less than or equal to the minimum distance between the water inlet and the front panel, so as to further reduce the risk of water splashing into the electrical component box in the event of a water pipe rupture.

[0014] According to any embodiment of the first aspect of this application, the water module further includes a wire fastener bracket, which is connected inside the housing and located between the water pump and the electrical component box, making it easier to fix the wiring.

[0015] According to any embodiment of the first aspect of this application, the housing includes a front panel, a rear panel, and a side panel disposed opposite to each other along its own thickness direction, wherein the front panel is detachably connected to the side panel.

[0016] According to any embodiment of the first aspect of this application, a guide groove is provided at the joint between the side panel and the front panel.

[0017] A second aspect of this application provides a heat pump system, including a water module and an outdoor unit as described in the above embodiments, wherein the water module is connected to the outdoor unit via refrigerant piping.

[0018] The water module provided in this application embodiment has a first water-blocking structure and a second water-blocking structure on the side of the electrical component box facing the water pump. The first and second water-blocking structures are respectively connected to one of the back panel and the front cover and extend towards the other. In the direction towards the water pump, the projections of the first and second water-blocking structures at least partially overlap, forming a wiring channel between them that communicates with the inside of the electrical component box. The wiring can enter the electrical component box through the wiring channel to achieve electrical connection with the internal components of the electrical component box. Since the projections of the first and second water-blocking structures in the direction towards the water pump at least partially overlap, double waterproofing can be formed at the wiring channel. Even if a water pipe breaks and water splashes out, the water can be first blocked by the outermost of the first and second water-blocking structures to slow down the splash speed or even change the direction of the water, reducing the risk of water entering the wiring channel. Even if some water enters the wiring channel, it can be blocked by the innermost of the first and second water-blocking structures. This effectively prevents water from entering the electrical component box while allowing for wiring, thus improving operational reliability and increasing the service life of the water module. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application 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.

[0020] Figure 1 This is a schematic diagram of the structure of a water module provided in one embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of a water module with the front panel removed according to one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of an electrical accessory box with the front cover removed according to one embodiment of this application;

[0023] Figure 4 This is a partial structural schematic diagram of a water module provided in one embodiment of this application;

[0024] Figure 5 This is a side view of an electrical component box provided in another embodiment of this application;

[0025] Figure 6 This is a partial structural schematic diagram of an electrical accessory box provided in one embodiment of this application;

[0026] Figure 7 This is a side view of an electrical appliance box provided in another embodiment of this application;

[0027] Figure 8 This is a partial structural schematic diagram of a water module provided in one embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the structure of a water module with the front panel removed according to one embodiment of this application;

[0029] Figure 10 This is a schematic diagram of the structure of a water module with the front panel removed according to one embodiment of this application;

[0030] Figure 11 This is a schematic diagram of the water circuit of a heat pump system provided in one embodiment of this application;

[0031] Figure 12 This is a schematic diagram of the circuit structure of a heat pump system provided in one embodiment of this application;

[0032] Figure 13 This is a circuit diagram of the circuit structure of a heat pump system provided in one embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100 - Outdoor unit; 110 - Compressor; 120 - Outdoor heat exchanger; 130 - Liquid storage tank; 140 - Outdoor air supply device; 200 - Indoor unit; 210 - First indoor heat exchanger; 220 - Second indoor heat exchanger; 230 - Indoor air supply device; 300 - Water module; 400 - Underfloor heating water circuit; 500 - Domestic water terminal; 600 - Fan coil unit circuit; 700 - First ball valve; 800 - Second ball valve; 900 - Water supply valve;

[0035] 1-Shell; 11-Front panel; 12-Rear panel; 13-Top panel; 14-Bottom panel; 15-Left side panel; 16-Right side panel; 17-Guide channel; 171-First channel section; 172-Second channel section;

[0036] 2-Board heat exchanger assembly;

[0037] 3-Water pump;

[0038] 4-Expansion tank;

[0039] 5-Electrical component box; 51-Box body; 511-Front cover; 5111-Second flange; 512-Back panel; 513-Top panel; 5131-Third flange; 514-Left side panel; 515-Right side panel; 52-Circuit board; 53-Terminal block; 54-First water-blocking structure; 541-First baffle; 5411-First flange; 542-Mounting plate; 5421-First folding plate; 5422-Second folding plate; 5423-Third folding plate; 55-Second water-blocking structure; 551-Guide plate; 552-Blocking component;

[0040] 6-Electrical component box mounting bracket;

[0041] 7-Plate heat exchanger mounting bracket;

[0042] 8-Wire guide bracket;

[0043] a - First port; b - Second port; c - Third port; d - Fourth port;

[0044] P1 - First connecting pipe; P101 - First outdoor side pipe; P102 - Second outdoor side pipe;

[0045] P2 - Second connecting pipe; P201 - First indoor side pipe; P202 - Second indoor side pipe;

[0046] P3 - Third connection piping; P301 - Refrigerant piping; P302 - Water piping; P3021 - Main pipeline; P3022 - Branch pipeline;

[0047] P4 - Fourth connection piping; P401 - Heating water piping;

[0048] P501 - Water inlet pipe; P502 - Domestic water piping;

[0049] P601 - Water piping for circuits;

[0050] Pi - Compressor suction pipe;

[0051] Po - Compressor discharge pipe;

[0052] SH - Water circuit;

[0053] SX - Water Tank;

[0054] VC1 - First shut-off valve; VC2 - Second shut-off valve; VC3 - Third shut-off valve; VC4 - Fourth shut-off valve; VF1 - Four-way switching valve; VF2 - Three-way valve;

[0055] K - Crossover port;

[0056] X - Thickness direction; Y - Width direction; Z - Length direction. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application 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 description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0059] In this application, the reference to "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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0062] In this application, "multiple" means two or more (including two).

[0063] Please see Figures 1 to 3 , Figure 1 A schematic diagram of the structure of a water module in one embodiment of this application is shown. Figure 2 This illustration shows a structural schematic diagram of a water module with the front panel removed in one embodiment of this application. Figure 3 A schematic diagram of the structure of an electrical accessory box with the front cover removed is shown in one embodiment of this application.

[0064] This application provides a water module 300, which includes a housing 1 and a heat exchanger assembly 2, a water pump 3, an expansion tank 4, and an electrical component box 5 disposed within the housing 1.

[0065] The housing 1 includes a front panel 11, a rear panel 12, and a side panel connecting the front panel 11 and the rear panel 12. The side panel is divided into a top panel 13, a bottom panel 14, a left side panel 15, and a right side panel 16 according to its location.

[0066] For ease of reference, the length direction Z of the housing 1 is defined as the relative setting direction of the top panel 13 and the bottom panel 14, the thickness direction X of the housing 1 is defined as the relative setting direction of the rear panel 12 and the front panel 11, and the width direction Y of the housing 1 is defined as the relative setting direction of the left panel 15 and the right panel 16.

[0067] The heat exchanger assembly 2 is fixed to the rear panel 12 by fasteners.

[0068] The plate heat exchanger assembly 2 includes a plate heat exchanger, an insulation component (not shown) disposed around the outer periphery of the plate heat exchanger, and a plate heat exchanger mounting bracket 7 for fixing the plate heat exchanger. The plate heat exchanger is fixed to the rear panel 12 of the housing 1 by the plate heat exchanger mounting bracket 7.

[0069] A plate heat exchanger consists of multiple layers of alternating heat exchange plates. Adjacent heat exchange plates alternately form water flow channels and refrigerant channels, allowing heat exchange between them. The plate heat exchanger has a refrigerant inlet and outlet connected by refrigerant channels. The refrigerant inlet and outlet are connected to refrigerant piping, which in turn connects to the outdoor unit to form a refrigerant circulation loop. The plate heat exchanger also has a water inlet and outlet connected by water flow channels. The water inlet and outlet are connected to water piping, which in turn connects to water-using terminals to form a water circulation loop.

[0070] The water pump 3 has an inlet and an outlet, which are connected to water piping respectively. In the water circulation loop, the water pump 3 is located on the upstream side of the plate heat exchanger to drive the water flow in the loop. Of course, in some other embodiments, the water pump 3 can also be located on the downstream side of the plate heat exchanger.

[0071] The expansion tank 4 is fixed to the rear panel 12 by fasteners.

[0072] Expansion tank 4 is positioned above the plate heat exchanger for easy connection of the interface to the water piping of the plate heat exchanger. Since the temperature and volume of the water within the plate heat exchanger change due to heat exchange, the expansion tank absorbs or releases the expansion or contraction caused by temperature changes, ensuring stable pressure within the plate heat exchanger, reducing internal pressure surges, and extending the service life of the plate heat exchanger. Optionally, the interface of expansion tank 4 is on the same side as the water inlet of the plate heat exchanger, connected to the interface of expansion tank 4 via an upward extension of the water piping. An air vent valve is installed at the end of the extension, ensuring that the vent outlet of the air vent valve is higher than the interface of expansion tank 4. The connecting piping structure between the interface of expansion tank 4 and the water piping is simple, with short pipe lengths, and the air vent valve design is also straightforward.

[0073] The electrical parts box 5 includes a back panel 512 and a front cover 511 arranged opposite to each other. The back panel 512 of the electrical parts box 5 is fixed to the rear panel 12 by fasteners.

[0074] The electrical component box 5 includes a box body 51 and a circuit board 52 and a terminal block 53 disposed within the box body 51. The box body 51 may be made of metal to have sufficient strength and protection.

[0075] The circuit board 52 serves as the base plate of the electrical component box 5 and is connected to the back plate 512 of the box body 51. The circuit board 52 is used to support and connect multiple electrical components, such as fuses, switches, sensors, power supplies, etc., which are fixed on the circuit board 52 by soldering, plugging, etc., and connected by wires or copper foil to form a complete circuit, realizing the processing and transmission of various electrical signals.

[0076] Terminal block 53 serves as the electrical interface between circuit board 52 and external devices. It includes multiple ports. Circuit board 52 is connected to one port of terminal block 53. External devices, such as water pump 3, connect to the other port of terminal block 53 via wiring to achieve electrical connection between circuit board 52 and water pump 3, thereby controlling the start and stop of water pump 3, adjusting the speed of water pump 3, and controlling the flow and pressure of water circulation loop.

[0077] The electrical component box 5 has a cable outlet K on the side facing the water pump 3. The wiring on the terminal block 53 is routed out through the cable outlet of the electrical component box 5 to achieve electrical connection between the electrical component box 5 and the water pump 3. However, since the water pump 3 and water pipes are located around the electrical component box 5, there is a risk that if the water pipes break, water inside may splash into the electrical component box 5 through the cable outlet K or other gaps, thus affecting the reliable operation of the electrical component box 5.

[0078] To address the aforementioned problems, this application provides a novel water module 300. By providing a first water-blocking structure 54 and a second water-blocking structure 55 on the side of the electrical component box 5 facing the water pump 3, water is blocked, reducing the risk of water entering the electrical component box 5 through the cable outlet K. For a better understanding of this application, the water module 300 and heat pump system of this application embodiment will be further described below with reference to the accompanying drawings.

[0079] Please see together Figures 1 to 4 , Figure 4 A partial structural schematic diagram of a water module provided in some embodiments of this application is shown.

[0080] The water module 300 provided in this application embodiment has a first water-blocking structure 54 and a second water-blocking structure 55 on the side of the electrical component box 5 facing the water pump 3. The first water-blocking structure 54 is connected to the back plate 512 and extends toward the front cover 511. The second water-blocking structure 55 is connected to the front cover 511 and extends toward the side where the back plate 512 is located. In the direction toward the water pump 3, the projections of the first water-blocking structure 54 and the second water-blocking structure 55 overlap at least partially and form a wiring channel between them that communicates with the interior of the electrical component box 5.

[0081] The water module 300 in this embodiment features a first water-blocking structure 54 and a second water-blocking structure 55 on the side of the electrical component box 5 facing the water pump 3. The first and second water-blocking structures 54 and 55 are respectively connected to one of the back panel 512 and the front cover 511 and extend towards the other. In the direction towards the water pump 3, the projections of the first and second water-blocking structures 54 and 55 at least partially overlap, forming a wiring channel between them that communicates with the interior of the electrical component box 5. Wiring can enter the electrical component box 5 through this channel, enabling electrical connection with internal components. Because the projections of the first and second water-blocking structures 54 and 55 at least partially overlap, double waterproofing is achieved in the wiring channel area. Even if a water pipe breaks and water splashes out, the water can be first blocked by the outermost of the first and second water-blocking structures 54 and 55, slowing down the splash speed or even changing its direction, reducing the risk of water entering the wiring channel. Even if some water enters the wiring channel, it can be blocked by the inner one of the first water-blocking structure 54 and the second water-blocking structure 55. This effectively reduces the risk of water entering the electrical component box through the wiring channel while realizing wiring, improving operational reliability and increasing the service life of the water module.

[0082] Understandably, based on the actual layout requirements of the electrical component box 5, the first water-blocking structure 54 can be positioned outside the second water-blocking structure 55, meaning the first water-blocking structure 54 is located on the side of the second water-blocking structure 55 facing the water pump 3. Alternatively, the second water-blocking structure 55 can also be positioned outside the first water-blocking structure 54, meaning the second water-blocking structure 55 is located on the side of the first water-blocking structure 54 facing the water pump 3; the specific arrangement can be adjusted according to actual needs.

[0083] Taking the second water-blocking structure 55 located outside the first water-blocking structure 54 as an example. At this time, the first water-blocking structure 54 and the second water-blocking structure 55 are spaced apart along the direction towards the water pump to form a wiring channel. The extension direction of the wiring channel is parallel to the extension direction of the first water-blocking structure 54 and the second water-blocking structure 55. A wiring opening K is formed between the first water-blocking structure 54 and the front cover 511. The wiring channel is connected to the interior of the electrical component box 5 through the wiring opening K.

[0084] Specifically, when a water pipe or water pump 3 ruptures and water splashes, it can be preferentially blocked by the second water-blocking structure 55. The water slides down along the second water-blocking structure 55, reducing the splash speed and thus lowering the probability of entering the wiring channel. Even if water enters the wiring channel, it can be blocked by the first water-blocking structure 54. Thus, the double waterproofing formed by the second water-blocking structure 55 and the first water-blocking structure 54 effectively reduces the risk of water entering the electrical component box. Furthermore, for the wiring channel, since the extension direction of the wiring channel intersects with the direction of water splashing when the water pump 3 ruptures, water is unlikely to enter the wiring channel. Even if water enters the wiring channel, it can be blocked by the first water-blocking structure 54 and will not enter the electrical component box. Moreover, since the wiring channel is connected to the interior of the electrical component box 5 through the cable outlet K, it can form a tortuous path design, further reducing the risk of water entering the electrical component box 5 through the wiring channel, thereby effectively achieving waterproofing of the electrical component box 5 and improving the operational reliability of the electrical component box 5.

[0085] It is understandable that the specific structure and position of the first water-blocking structure 54 and the second water-blocking structure 55 are related to the position of the water pump 3.

[0086] As an optional implementation, the water pump 3 is positioned below the electrical component housing 5 along the length Z of the casing 1. A first water-blocking structure 54 and a second water-blocking structure 55 are provided on the bottom of the electrical component housing 5, facing the water pump 3. This arrangement positions the electrical component housing 5, expansion tank 4, and plate heat exchanger above the water pump 3 along the length Z of the casing 1. In the event of an accidental leak from the water pump 3, the leaked water can flow downwards, making it less likely to come into contact with the electrical component housing 5. This reduces the possibility of leaked water entering the electrical component housing 5 and causing a circuit failure. It also reduces the possibility of the leaked water freezing on the electrical component housing 5, plate heat exchanger, or expansion tank 4 in low-temperature environments, potentially causing damage to these components.

[0087] It is understood that in some other embodiments, if the water pump 3 is located to the side or in another position of the electrical equipment box 5, the positions of the first water-blocking structure 54 and the second water-blocking structure 55 can also be adjusted according to the position of the water pump 3.

[0088] For ease of description, this application will use the following example: the water pump 3 is located below the electrical component box 5, the second water-blocking structure 55 is at least partially located on the side of the first water-blocking structure 54 facing the water pump 3, and the first water-blocking structure 54 and the second water-blocking structure 55 are located at the bottom of the electrical component box 5.

[0089] As an optional implementation, the water pump 3 is located below the electrical component box 5 along the length Z of the housing 1, and the orthographic projection of the water pump 3 overlaps with the orthographic projection of the electrical component box 5 along the length Z of the housing 1. This arrangement design allows for efficient use of the internal space of the housing 1, reducing the dimensions of the water module 300 along the length Z and thickness X, which is beneficial for miniaturizing the water module 300 along both the thickness X and length Z directions.

[0090] Optionally, the orthographic projection of the outlet and inlet of the water pump 3 in the length direction Z of the housing 1 is located within the range of the orthographic projection of the first water-blocking structure 54 and / or the second water-blocking structure 55 in the length direction Z of the housing 1.

[0091] When the water pump 3 is located below the electrical component box 5 along the length direction Z of the housing 1, the box body 51 of the electrical component box 5 also includes a top plate 513, a left side plate 514 and a right side plate 515. The top plate 513 is located above the electrical component box 5 and is opposite to the first water-blocking structure 54 and the second water-blocking structure 55. The left side plate 514 and the right side plate 515 are opposite to each other along the width direction Y of the housing 1.

[0092] For the first water-blocking structure 54 and / or the second water-blocking structure 55, the first water-blocking structure 54 and / or the second water-blocking structure 55 can extend along the width direction Y of the housing 1 and connect the left side plate 514 and the right side plate 515 to form a fully enclosed shape. Alternatively, the first water-blocking structure 54 and / or the second water-blocking structure 55 can also include at least two inner water-blocking sections, each inner water-blocking section being spaced apart along the width direction Y of the housing 1, i.e., the first water-blocking structure 54 forms a semi-enclosed shape. Specifically, the structure of the first water-blocking structure 54 and / or the second water-blocking structure 55 can be adjusted according to the position of the water pump 3, so that the orthographic projection of the outlet and inlet of the water pump 3 in the length direction Z of the housing 1 is within the range of the orthographic projection of the first water-blocking structure 54 and / or the second water-blocking structure 55 in the length direction Z of the housing 1.

[0093] To facilitate understanding of the technical solution of this application, the specific structures of the second water-blocking structure 55 and the first water-blocking structure 54 will be described below with reference to the accompanying drawings.

[0094] In some alternative embodiments, the second water-blocking structure 55 includes a guide plate 551 connected to the front cover and having a guide surface extending toward the water pump 3. The guide surface is configured as an arcuate surface or an inclined surface inclined toward the side where the back plate 512 is located.

[0095] By configuring at least a portion of the surface of the second water-blocking structure 55 extending toward the water pump 3 as a guide surface, which is either an arc-shaped surface or an inclined surface tilted toward the side where the back plate 512 is located, when water splashes onto the second water-blocking structure 55, the water can flow along the guide surface, making it less likely for water to accumulate on the second water-blocking structure 55. At the same time, the guide surface of the second water-blocking structure 55 can guide the water to flow toward the lowest point of the arc-shaped surface or the inclined surface, so that the water splashed onto the second water-blocking structure 55 can slide off along the inclined surface or the arc-shaped surface, thereby guiding the water away from the electrical component box 5 and preventing water from entering the electrical component box 5.

[0096] As some alternative implementations, the guide plate 551 can be configured as a plate-shaped structure, with the guide plate 551 inclined towards the side of the back plate 512 in the length direction Z. The guide plate 551 is at least partially blocked on the side of the first water-blocking structure 54 facing the water pump 3 in the length direction Z of the housing 1. The above configuration simplifies the structure of the guide plate 551 and allows the surface of the second water-blocking structure 55 facing the wiring channel to also be configured as an inclined surface. This ensures that even if water enters the wiring channel, it can flow out along the second water-blocking structure 55 without remaining in the wiring channel, reducing the risk of water entering the electrical component box 5.

[0097] See Figures 1 to 4In some alternative embodiments, the second water-blocking structure 55 further includes a blocking member 552, which is connected to the guide plate 551 and extends along the thickness direction X of the housing 1 toward the side where the back plate 512 is located. The blocking member 552 includes at least one of a second baffle and a seal.

[0098] By setting up a blocking member 552, and extending the blocking member 552 from the guide plate 551 along the thickness direction X of the housing 1 towards the side where the back plate 512 is located, the blocking member 552 can at least partially block the first water-blocking structure 54 on the side facing the water pump 3. This reduces the space occupied by the electrical component box 5 along the length direction Z compared to directly using the guide plate 551 overlapping with the first water-blocking structure 54, facilitating the miniaturization design of the water module 300. Furthermore, it also makes it easier to increase the overlap range between the blocking member 552 and the first water-blocking structure 54, further enhancing the waterproof effect of the electrical component box 5.

[0099] Optionally, the blocking member 552 can be connected to other structures in the electrical component box 5 and / or other structures within the water module 300. Compared to the form in which the blocking member 552 is suspended, this can improve the structural strength of the blocking member 552, optimize the stress, and improve the reliability of the water module 300.

[0100] Optionally, when the blocking member 552 can be connected to other structures in the electrical component box 5 and / or other structures in the water module 300, the blocking member 552 may be provided with a through hole so that the wiring can extend through the through hole on the blocking member 552 into the wiring channel between the first water-blocking structure 54 and the second water-blocking structure 55 to connect with the terminal block 53 in the electrical component box 5, thereby improving the convenience of wiring.

[0101] Please see Figure 4 When the blocking member 552 is configured as a sealing member, as an optional implementation, the electrical component box 5 is disposed on one side of the expansion tank 4 and the plate heat exchanger along the thickness direction X of the shell 1, with the expansion tank 4 disposed above the plate heat exchanger. The water module 300 includes an electrical component box mounting bracket 6 and a plate heat exchanger mounting bracket 7. The electrical component box mounting bracket 6 is connected to the expansion tank 4, the electrical component box 5 is connected to the electrical component box mounting bracket 6, the plate heat exchanger mounting bracket 7 is connected to the shell 1, and the plate heat exchanger is connected to the plate heat exchanger mounting bracket 7.

[0102] The plate heat exchanger mounting bracket 7 fixes the plate heat exchanger to the back plate 512 by semi-enclosing the upper and lower sides and the front side of the plate heat exchanger. The blocking member 552 extends along the thickness direction X of the shell 1 and connects the guide plate 551 and the plate heat exchanger mounting bracket 7.

[0103] The above structure facilitates the arrangement of the electrical component box 5, expansion tank 4 and plate heat exchanger assembly 2 within the housing 1. When the blocking member 552 is set as a sealing member, the blocking member 552 can extend along the thickness direction X and connect to the guide plate 551 and the plate heat exchanger fixing frame 7 to improve the water blocking effect, reduce the risk of water splashing into the electrical component box 5, and improve the reliability of the water module 300 operation.

[0104] Optionally, the seal can be configured as at least one of rubber seal, flexible graphite seal, etc. The seal can be integrally disposed between the guide plate 551 and the plate heat exchanger fixing frame 7. The seal can also be disposed separately and include multiple connected sub-seals, which are stacked and connected to each other to form a seal.

[0105] Please see Figure 5 , Figure 5 A side view of an electrical appliance box provided in another embodiment of this application is shown.

[0106] When the blocking member 552 is configured as the second baffle, in some alternative embodiments, the orthographic projection of the guide plate 551 in the length direction Z is offset from the orthographic projection of the first baffle in the length direction Z. The blocking member 552 extends from the guide plate 551 toward the side where the back plate 512 is located and at least partially blocks the side of the first baffle structure 54 toward the water pump 3. The blocking member 552 connects the guide plate 551 and the first baffle structure 54 to simplify the structure of the blocking member 552.

[0107] It is understandable that the specific structure and position of the guide plate 551 and the blocking component 552 can be adjusted according to the specific structure of the water module 300, that is, to meet the arrangement space requirements of the second water blocking structure 55 and reduce the risk of water entering the electrical component box 5.

[0108] Please see Figures 1 to 4 , Figure 6 , Figure 6 The diagram shows partial structural schematics of the electrical enclosure in some embodiments of this application. In some optional embodiments, the first water-blocking structure 54 and the back plate 512 are integrally formed. The first water-blocking structure 54 can be integrally folded from the back plate 512 toward the front cover 511, which simplifies the structure. At the same time, there is no gap between the first water-blocking structure 54 and the back plate 512, reducing the risk of water entering the water module 300 through the gap between the first water-blocking structure 54 and the back plate 512, and further improving the reliability of the water module 300. Optionally, the first water-blocking structure 54 is provided with a first flange 5411, which is located at at least one end of the first water-blocking structure 54 along the width direction Y of the housing 1 and covers the outer wall surface of the left side plate 514 and / or the right side plate 515.

[0109] That is, after the back panel 512 is integrally folded towards the front cover 511 to form the first water-blocking structure 54, the edge of the first water-blocking structure 54 along the width direction Y can extend beyond the left side panel 514 and / or the right side panel 515, so that the first water-blocking structure 54 can be further folded to the outer wall surface of at least one of the left side panel 514 and the right side panel 515 to form the first flange 5411, so as to eliminate the gap between the first water-blocking structure 54 and the left side panel 514 and / or the right side panel 515, reduce the risk of water entering the water module 300 from the gap between the first water-blocking structure 54 and the left side panel 514 and / or the right side panel 515, and further improve the reliability of the operation of the water module 300.

[0110] Optionally, the front cover 511 is provided with a second flange 5111, which is located at at least one end of the front cover 511 along the width direction Y of the housing 1 and covers the outer wall surface of the left side plate 514 and / or the right side plate 515, and / or the top plate 513 includes a third flange 5131, which covers the outer wall surface of at least one of the front cover 511, the left side plate 514, the right side plate 515 and the back plate 512, so as to eliminate the gap between two adjacent plates in the housing 51, reduce the risk of water entering the water module 300 from the gap between two adjacent plates, and improve the reliability of the operation of the water module 300.

[0111] In addition, the top plate 513 covers each side plate through the third flange 5131, which can also prevent rain and snow from entering the interior of the water module 300 through the gaps in the housing 1 when the water module 300 is installed outdoors or in other environments.

[0112] In some optional embodiments, the electrical component box 5 further includes a terminal block 53, which is connected to the first water-blocking structure 54. By placing the terminal block 53 on the first water-blocking structure 54, the structure of the first water-blocking structure 54 can be reused. While utilizing the first water-blocking structure 54 to block water, the terminal block 53 can be fixed using the first water-blocking structure 54, so as to facilitate the wiring of the terminal block 53 and allow the wires to be connected from the wire outlet K through the wire routing channel, thereby improving the operational reliability and wiring convenience of the water module 300.

[0113] In some alternative embodiments, the first water-blocking structure 54 includes a first baffle 541 and a mounting plate 542. The first baffle 541 is connected to the back plate 512 and extends toward the front cover 511. The mounting plate 542 is connected to the side of the first baffle 541 away from the water pump 3. The terminal block 53 is disposed on the mounting plate 542.

[0114] By configuring the first water-blocking structure 54 as a first baffle 541 and a mounting plate 542, the first baffle 541 can block water, while the mounting plate 542 can fix the terminal block 53. Since the mounting plate 542 is located on the side of the first baffle 541 away from the water pump 3, it can facilitate wiring of the terminal block 53 while reducing the risk of water splashing onto the terminal block 53 and improving the reliability of the water module 300 operation.

[0115] Optionally, the first baffle 541 and the mounting plate 542 can be configured as an integral structure, and the mounting plate 542 can be folded from the first baffle 541 toward the side away from the water pump 3 to simplify the structure of the first water-blocking structure 54.

[0116] Please see Figures 1 to 7 , Figure 7 A side view of an electrical appliance box provided in some embodiments of this application is shown.

[0117] In some alternative embodiments, the mounting plate 542 includes a plurality of folded plates connected in sequence, with the terminal block 53 disposed on one of the folded plates, thereby adjusting the mounting direction of the terminal block 53. This facilitates wiring while further reducing the risk of water splashing onto the terminal block 53 and improving the reliability of the water module 300 operation.

[0118] Optionally, the terminal block 53 can be located on the innermost folding plate, which greatly reduces the risk of water splashing onto the terminal block 53 and improves the reliability of the water module 300 operation.

[0119] Optionally, the plurality of folding plates includes a first folding plate 5421 and a second folding plate 5422, such as Figure 7 As shown in (a) to (d), the first folding plate 5421 can be a vertical plate or an inclined plate. The inclined plate can be parallel to the guide plate 551 to facilitate wiring. When the first folding plate 5421 is a vertical plate, the second folding plate 5422 can be a horizontal plate. When the first folding plate 5421 is an inclined plate, the second folding plate 5422 can be a vertical plate or a horizontal plate.

[0120] Optionally, the plurality of folds may also include a third fold 5423, for example, as shown in the figure. Figure 7 As shown in (e), the first fold plate 5421 is an inclined plate, the second fold plate 5422 is a vertical plate, and the third fold plate 5423 is a horizontal plate.

[0121] Optionally, the mounting plate 542 may also include a support structure, which is supported on the side of the mounting plate 542 opposite to the terminal block 53, to improve the structural strength of the mounting plate 542 and facilitate the installation and fixing of the terminal block 53. The support structure may be configured as at least one of a supporting flange or a supporting rib.

[0122] Please see Figures 1 to 8 , Figure 8A partial structural schematic diagram of a water module provided in some embodiments of this application is shown. In some optional embodiments, the electrical component box 5 is located on the side of the housing 1 near the front panel 11, that is, the electrical component box 5 is disposed on the front side of the expansion tank 4 and the plate heat exchanger along the thickness direction X of the housing 1.

[0123] Since the electrical component box 5 needs to house components such as circuit boards 52 and terminal blocks 53, the way the electrical component box 5 is located close to the front panel 11 of the housing 1 means that when the front panel 11 of the housing 1 needs to be removed for inspection or maintenance of the electrical component box 5, it is not necessary to remove the expansion tank 4 and the plate heat exchanger. This reduces the difficulty and complexity of inspection or maintenance work, and helps to improve the convenience and efficiency of inspection or maintenance.

[0124] In some alternative embodiments, in the thickness direction X, the minimum distance between the edge of the first water-blocking structure 54 toward the front cover 511 and the front panel 11 is less than or equal to the minimum distance between the water inlet and the front panel 11, the water inlet including the inlet and the outlet, the minimum distance between the water inlet and the front panel 11 being the smaller of the minimum distance between the inlet and the front panel 11 and the minimum distance between the outlet and the front panel 11.

[0125] By ensuring that the minimum distance between the edge of the first water-blocking structure 54 toward the front cover 511 and the front panel 11 in the thickness direction X is less than or equal to the minimum distance between the water inlet and the front panel 11, the orthogonal projection of the cable outlet K in the length direction Z can be avoided by the orthogonal projection of the water inlet of the water pump 3 in the length direction Z, thereby further reducing the risk of water splashing into the electrical component box 5 and entering the electrical component box 5 when the water pipe breaks.

[0126] In some alternative embodiments, the water module 300 further includes a wire fastener bracket 8, which is connected inside the housing 1 and located between the water pump 3 and the electrical components box 5.

[0127] The plate heat exchanger mounting bracket 7 is also equipped with a wire pass bracket 8, which has a wire clamping buckle to facilitate the fixing of the wires led out from the electrical component box 5. The plate heat exchanger mounting bracket 7 has multiple functions, a simple structure, and is convenient for wiring, which is conducive to the miniaturization of the whole machine.

[0128] Please see Figures 1 to 10 , Figure 9 and Figure 10 A schematic diagram of the structure of the water module 300 with the front panel 11 removed is shown in some embodiments of this application.

[0129] In some alternative embodiments, the housing 1 includes a front panel 11, a rear panel 12 disposed opposite to each other along its own thickness direction X, and a side panel surrounding the front panel 11 and the rear panel 12, wherein the front panel 11 is detachably connected to the side panel.

[0130] Within the housing 1, a front panel 11 and a rear panel 12 are spaced apart along the thickness direction X of the housing 1. An expansion tank 4, a plate heat exchanger, and an electrical component box 5 are positioned between the front panel 11 and the rear panel 12. The water module 300 can be fixed to the mounting platform via the rear panel 12. For example, the rear panel 12 can be detachably fixed to the mounting platform using screws or other fasteners, or it can be fixed to the mounting platform using a mounting plate or other connectors. The front panel 11 is detachably connected to the side panel, and it provides protection for the expansion tank 4, the plate heat exchanger, and the electrical component box 5. When inspection or maintenance of the water module 300 is required, the front panel 11 can be opened for inspection or maintenance.

[0131] Optionally, a flow channel 17 is provided at the junction of the side panel and the front panel 11.

[0132] The side panels are divided into top panel 13, bottom panel 14, left side panel 15 and right side panel 16 according to their location.

[0133] In some embodiments, the guide channel 17 may be provided at the junction of the top panel 13 and the front panel 11 so that when water flows to the surface of the housing 1 in rainy weather or other circumstances, the water can flow out along the guide channel 17 between the top panel 13 and the front panel 11, making it difficult for water to accumulate on the surface of the water module 300 and reducing the risk of water entering the interior of the housing 1.

[0134] In other embodiments, the flow channel 17 includes a first channel segment 171 and a second channel segment 172 that are connected to each other. The first channel segment 171 is disposed at the junction of the top panel 13 and the front panel 11, and the second channel segment 172 is disposed at the junction of at least one of the left side panel 15 and the right side panel 16 with the front panel 11. In rainy weather or other circumstances, when water flows to the surface of the housing 1, the water can flow out along the first channel segment 171 and the second channel segment 172, so that water and the like are not easily accumulated on the surface of the water module 300, reducing the risk of water entering the interior of the housing 1.

[0135] As an optional implementation, the flow channel 17 has a concave structure, and the front panel 11 is provided with a splicing structure that cooperates with the flow channel 17. After splicing, the front panel 11 covers the flow channel 17. When the water module 300 is installed outdoors, in weather conditions such as rain and snow, even if rain or snow falls on the housing 1 of the water module 300, the rain or snow will not easily enter the flow channel 17 through the splicing gap because the front panel 11 covers the flow channel 17. Furthermore, even if a small amount of rain or snow enters the flow channel 17, the rain or snow will be guided downwards along the flow channel 17 and will not enter the interior of the housing 1 or the electrical component box 5.

[0136] Optionally, such as Figure 9 and Figure 10As shown, along the length Z of the housing 1, the lower end of the flange of the second groove section 172 located on the left side panel 15 and the right side panel 16 is lower than the water pump 3 and even lower than the electrical component box 5. This makes it less likely for water in the guide groove 17 to enter the interior of the housing 1 and even less likely for it to enter the electrical component box 5, thereby further improving the reliability of the operation of the electrical component box 5 and increasing the service life of the water module 300.

[0137] This application provides a heat pump system, which includes a water module 300 and an outdoor unit as described in the above embodiment. The water module 300 is connected to the outdoor unit through refrigerant piping.

[0138] Please see Figures 1 to 11 , Figure 11 A schematic diagram of the water circuit of a heat pump system provided in one embodiment of this application is shown.

[0139] A water supply valve 900 is installed on the water pipe P302 of the water circuit SH, and it is connected to the underfloor heating water circuit 400, the water tank SX, and the fan coil circuit 600. Here, the water pipe P302 includes a main pipe P3021 and a branch pipe P3022, which is connected to the main pipe P3021 via a three-way valve VF2. The underfloor heating water circuit 40 includes an underfloor heating water pipe P401, whose two ends are respectively connected to the main pipe P3021 of the water pipe P302. The branch pipe P3022 passes through the water tank SX, and an inlet pipe P501 and a domestic water pipe P502 connected to domestic water terminals 510 such as faucets and showers are installed on the water tank SX. The fan coil circuit 600 includes a coil circuit water pipe P601, whose two ends are respectively connected to the main pipe P3021 of the water pipe P302. Additionally, this illustration shows a floor heating water circuit 400 consisting of only one floor heating water pipe P401, but it is not limited to this; the floor heating water circuit 400 may also include multiple floor heating water pipes P401 connected in parallel. Similarly, this illustration shows a fan coil unit circuit 600 consisting of only one coil circuit water pipe P601, but it is not limited to this; the fan coil unit circuit 600 may also include multiple coil circuit water pipes P601 connected in parallel. Of course, in Figure 11 In the structure shown, the water circuit SH of the water module 300 may also be connected to any one or both of the following: the underfloor heating water circuit 400, the water tank SX (including the inlet pipe P501 (the inlet in the figure is the inlet of the water tank SX), the domestic water piping P502 and the domestic water terminal 510), and the fan coil unit circuit 600.

[0140] On the water circuit SH, a first ball valve 700 is installed on the water pipe P302 on the inlet side of the plate heat exchanger 310, and a second ball valve 800 is installed on the main pipe P3021 on the outlet side of the plate heat exchanger 310. The first ball valve 700 and the second ball valve 800 are used to regulate the flow of water between the water module 300 and the underfloor heating system.

[0141] A filter assembly can also be installed on the inlet water pipe P302 to purify and filter the water entering the plate heat exchanger 310.

[0142] A drain valve can also be installed on the water inlet side water pipe P302 and / or the main outlet side water pipe P3021, and the drain valve can be opened to drain water when the water module 300 needs to drain water.

[0143] The aforementioned filter assembly can be integrated into the valve body of the first ball valve 700, and the drain valve can also be integrated into the valve body of the second ball valve 800. This integration of multiple components results in overall miniaturization and fewer joints, simplifying the water circuit.

[0144] Please see Figure 12 , Figure 12 A circuit diagram of the circuit structure of a heat pump system provided in one embodiment of this application is shown.

[0145] The heat pump system of this embodiment includes an outdoor unit 100, an indoor unit 200 (e.g., a three-pipe indoor unit) and a water module 300, which are interconnected by multiple (e.g., four) connecting pipes.

[0146] The aforementioned multiple connecting pipes include a first connecting pipe P1, a second connecting pipe P2, a third connecting pipe P3, and a fourth connecting pipe P4.

[0147] In this specification, a three-pipe indoor unit refers to an indoor unit that can be connected to three of the multiple connecting pipes (first connecting pipe P1 to fourth connecting pipe P4) of a heat pump system. For example, in this embodiment, the indoor unit 200 can be connected to the first connecting pipe P1, the second connecting pipe P2, and the third connecting pipe P3 of the heat pump system to allow refrigerant to flow between the outdoor unit 100 and the indoor unit 200.

[0148] (Outdoor Unit 100)

[0149] Additionally, the outdoor unit 100 includes a compressor 110, an outdoor heat exchanger 120, a valve V11, a liquid storage tank 130, and a four-way switching valve VF1. Furthermore, the outdoor unit 100 also includes an outdoor air supply device 140, which supplies air to the outdoor heat exchanger 120.

[0150] Specifically, the discharge side of compressor 110 is connected to one end of compressor discharge pipe Po, and the other end of compressor discharge pipe Po is located at... Figure 12 Point K10 is connected to one end of the first outdoor pipe P101, midway through the compressor discharge pipe Po (located in...). Figure 12 At point K11, the second outdoor piping P102 branches off. One end of the second outdoor piping P102 is located at... Figure 12 Point K11 is connected to the compressor discharge pipe Po mentioned above.

[0151] Additionally, the other end of the first outdoor piping P101 is connected to the first port a of the four-way switching valve VF1, and the other end of the second outdoor piping P102 is connected to the fourth port d of the four-way switching valve VF1. Furthermore, the second port b of the four-way switching valve VF1 is connected to one end of the second connecting piping P2, and the third port c of the four-way switching valve VF1 is connected to one end of the third connecting piping P3. The aforementioned four-way switching valve VF1 can switch between a first switching state and a second switching state. In the first switching state, the four-way switching valve VF1 is switched to connect the first port a to the second port b and the third port c to the fourth port d, thereby connecting the first outdoor piping P101 to the second connecting piping P2 and the second outdoor piping P102 to the third connecting piping P3. In the second switching state, the four-way switching valve VF1 is switched to connect the first port a to the fourth port d and the second port b to the third port c, thereby connecting the first outdoor piping P101 to the second outdoor piping P102 and the second connecting piping P2 to the third connecting piping P3. Additionally, in the middle of the second outdoor piping P102 (located at...) Figure 12 At point K12, the branch has a fourth connecting pipe P4.

[0152] On the other hand, the suction side of compressor 110 is connected to one end of compressor suction pipe Pi, and the other end of compressor suction pipe Pi (located in...) Figure 12 The compressor suction pipe Pi is connected to one end of the first connecting pipe P1 at point K13. A liquid storage tank 130 is provided in the middle of the compressor suction pipe Pi. In addition, an outdoor heat exchanger 120 and a valve V11 are provided in the middle of the first connecting pipe P1, more specifically, in the middle of the portion of the first connecting pipe P1 located in the outdoor unit 100.

[0153] For ease of description, the first connecting pipe P1, second connecting pipe P2, third connecting pipe P3, and fourth connecting pipe P4 referred to in this application embodiment all include a portion of the corresponding piping located within the outdoor unit 100. Unless otherwise specified, in this embodiment, the first connecting pipe P1 includes an outdoor unit-side connecting pipe and an external connecting pipe. The outdoor unit-side connecting pipe and the external connecting pipe of the aforementioned first connecting pipe P1 are separated by a first shut-off valve VC1. Hereinafter, the first shut-off valve VC1 is sometimes also referred to as... Figure 12 The pipe section between point K13 is called the outdoor unit side connecting pipe of the first connecting pipe P1, and the first shut-off valve VC1 is connected to... Figure 12 The pipe section between point K30 is referred to as the external connection pipe of the first connecting pipe P1. Similarly, the second connecting pipe P2 includes an outdoor unit-side connecting pipe and an external connection pipe. The outdoor unit-side connecting pipe of the second connecting pipe P2 is the pipe section between the second port b of the four-way switching valve VF1 and the second shut-off valve VC2. The external connection pipe of the second connecting pipe P2 is the pipe section between the second shut-off valve VC2 and... Figure 12 The pipe section between point K21. The third connecting pipe P3 includes outdoor unit-side connecting pipe and external connecting pipe. The outdoor unit-side connecting pipe of the third connecting pipe P3 is the pipe section between the third port c of the four-way switching valve VF1 and the third shut-off valve VC3. The external connecting pipe of the third connecting pipe P3 is the pipe section between the third shut-off valve VC3 and... Figure 12 The pipe section between point K23. The fourth connecting pipe P4 includes outdoor unit-side connecting pipe and external connecting pipe. The outdoor unit-side connecting pipe of the fourth connecting pipe P4 is... Figure 12 The pipe section between point K12 and the fourth shut-off valve VC4, and the external connection pipe of the fourth connecting pipe P4 is the pipe between the fourth shut-off valve VC4 and... Figure 12 The pipe section between point K31 in the middle.

[0154] In other words, the first shut-off valve VC1 is used to connect the portion inside the outdoor unit 100 of the first connecting pipe P1 to the portion outside the outdoor unit 100, the second shut-off valve VC2 is used to connect the portion inside the outdoor unit 100 of the second connecting pipe P2 to the portion outside the outdoor unit 100, the third shut-off valve VC3 is used to connect the portion inside the outdoor unit 100 of the third connecting pipe P3 to the portion outside the outdoor unit 100, and the fourth shut-off valve VC4 is used to connect the portion inside the outdoor unit 100 of the fourth connecting pipe P4 to the portion outside the outdoor unit 100.

[0155] Under normal circumstances, the first shut-off valve VC1, the second shut-off valve VC2, the third shut-off valve VC3, and the fourth shut-off valve VC4 are in the normally open state. However, in certain situations, any one or more, or even all of the first shut-off valves VC1 to the fourth shut-off valve VC4, can be omitted.

[0156] (Indoor Unit 200)

[0157] The indoor unit 200 is equipped with a valve V21, a first indoor heat exchanger 210, a valve V22, a second indoor heat exchanger 220, and an indoor air supply device 230 for delivering heat or cold energy from the indoor unit 200 into the room.

[0158] Specifically, in the middle of the first connecting pipe P1 (located in...) Figure 12 At point K20, a first indoor piping P201 branches off. Midway through this first indoor piping P201, one end of the first indoor piping P201 (located at...) Figure 12 Starting from point K20, valve V21 and the first indoor heat exchanger 210 are sequentially installed. One end of the first indoor piping P201 (located at...) Figure 12 The first indoor pipe P201 (located at point K20) is connected to the external connecting pipe of the first connecting pipe P1 (the part located outside the outdoor unit 100), and the other end of the first indoor pipe P201 (located at point K20) is connected to the external connecting pipe of the first connecting pipe P1 (the part located outside the outdoor unit 100). Figure 12 The second connecting pipe (located outside the outdoor unit 100) is connected to the external connecting pipe of the second connecting pipe P2 (at point K21 in the middle).

[0159] Midway through the aforementioned first indoor interior piping P201, located between point K20 and the aforementioned valve V21 (located in... Figure 12 At point K22, a second indoor piping P202 branches off. Midway through the second indoor piping P202, from one end (located at...) Figure 12 Starting from point K22, valve V22 and the second indoor heat exchanger 220 are installed sequentially. One end of the aforementioned second indoor piping P202 (located at...) Figure 12 The point K22 in the middle) is connected to the first indoor side piping P201 and is located between the valve V21 and one end of the first indoor side piping P201. The other end of the second indoor side piping P202 (located at...) Figure 12 The external connecting pipe (located outside outdoor unit 100) of the third connecting pipe P3 is connected at point K23 in the middle.

[0160] Here, the first indoor heat exchanger 210 and the second indoor heat exchanger 220 are arranged in the flow path of the airflow formed by the indoor air supply device. Furthermore, electric valves or solenoid valves can be used as valves V21 and V22.

[0161] (Water Module 300)

[0162] The water module 300 includes a refrigerant piping P301, a water circuit SH consisting of a water piping P302, and a plate heat exchanger 310 for heat exchange between the refrigerant flowing through the refrigerant piping P301 and the water flowing through the water piping P302. Specifically, one end of the refrigerant piping P301 (located in...) Figure 12 At point K30 in the middle, it is connected to the external connecting pipe (located outside the outdoor unit 100) of the first connecting pipe P1, and on the above-mentioned refrigerant pipe P301, from one end (located at...) Figure 12 Starting from point K30, valve V31 and plate heat exchanger 310 are sequentially installed. Furthermore, the other end of the aforementioned refrigerant piping P301 (located at...) Figure 12 The external connection pipe (located outside the outdoor unit 100) of the fourth connection pipe P4 is connected at point K31 in the middle.

[0163] (First connecting pipe P1 to fourth connecting pipe P4)

[0164] The first connecting pipe P1 connects one end of the first indoor side pipe P201 of the indoor unit 200 (located in...). Figure 12 (at point K20 in the middle) and the other end of the compressor suction pipe Pi (located at...) Figure 12 The second connecting pipe P2 connects to the other end of the first indoor side pipe P201 of the indoor unit 200 (located at point K13). Figure 12 The third connecting pipe P3 connects the other end of the second indoor side pipe P202 of the indoor unit 200 (located at K21) to the second port b of the four-way switching valve VF1. Figure 12 Point K23 in the middle) is connected to the third port c of the four-way switching valve VF1, and the fourth connecting pipe P4 connects the other end of the refrigerant pipe P301 of the water module 300 (located at point K23 in the middle) to the third port c of the four-way switching valve VF1. Figure 12 The middle section between point K31 and the second outdoor external piping P102 (located at point K31) and point P102. Figure 12 Connect point K12 in the middle.

[0165] In addition, the heat pump system of this embodiment also includes a control unit (not shown), which is used to control the operation of components such as the compressor 110, outdoor air supply device 140, valve V11, valve V21, valve V22, indoor air supply device 230, valve V31 and four-way switching valve VF1 of the heat pump system.

[0166] Other advantages and modifications will readily occur to those skilled in the art. Therefore, more broadly, the embodiments of this application are not limited to the specific details and representative embodiments shown and described herein. Thus, modifications can be made without departing from the spirit or scope of the overall concept of the application embodiments as defined by the appended claims.

[0167] For example, in the heat pump system of this application embodiment, see Figure 12 As shown, the indoor unit 200 is illustrated using a three-pipe indoor unit as an example, but the embodiments of this application are not limited to this, and may also be as follows: Figure 13 The diagram shows a two-pipe indoor unit, with the outdoor unit 100, indoor unit 200, and water module 300 interconnected via three connecting pipes.

[0168] Furthermore, in the water module 300 of this application embodiment, the water supply valve 900 installed on the water pipe P302 is located outside the housing 1 of the water module 300. However, this application embodiment is not limited to this and may also be located inside the housing 1 of the water module 300. In this case, the water supply valve 900 may not have a handle to rotate the valve core, but may be connected to a control unit (not shown) to control the rotation of the valve core, thus becoming an electric three-way valve.

[0169] Additionally, in the water module 300 of this application embodiment, see... Figure 12 As shown, the above-mentioned water supply valve 900 is provided on the pipe section of the water pipe P302 located inside the housing 1 (indicated by dashed lines) of the water module 300 before the water circuit SH enters the plate heat exchanger 310 (also known as the "inlet side"). However, the embodiments of this application are not limited to this. The water supply valve 900 can also be provided on the pipe section located outside the housing 1 (indicated by dashed lines) of the water module 300.

[0170] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A water module, comprising a housing and an expansion tank, a heat exchanger assembly, a water pump, and an electrical component box disposed within the housing, wherein the heat exchanger assembly is connected to water piping and refrigerant piping, the water piping being connected to the water pump, and the electrical component box comprising a back plate and a front cover disposed opposite to each other, characterized in that: The electrical component box has a first water-blocking structure and a second water-blocking structure on the side facing the water pump. The first water-blocking structure is connected to the back plate and extends toward the front cover. The second water-blocking structure is connected to the front cover and extends toward the side where the back plate is located. In the direction toward the water pump, the projections of the first water-blocking structure and the second water-blocking structure at least partially overlap and form a wiring channel between them that communicates with the interior of the electrical component box.

2. The water module according to claim 1, characterized in that, The second water-blocking structure is at least partially disposed on the side of the first water-blocking structure facing the water pump. The second water-blocking structure includes a guide plate, which is connected to the front cover and has a guide surface extending toward the water pump. The guide surface is configured as an arc-shaped surface or an inclined surface inclined toward the side where the back plate is located.

3. The water module according to claim 2, characterized in that, The second water-blocking structure further includes a blocking member, which is connected to the guide plate and extends toward the side where the back plate is located. The blocking member includes at least one of a second baffle and a sealing member.

4. The water module according to claim 1, characterized in that, The first water-blocking structure and the back plate are integrated into one piece.

5. The water module according to claim 1, characterized in that, The electrical component box also includes a terminal block, which is connected to the first water-blocking structure.

6. The water module according to claim 5, characterized in that, The first water-blocking structure includes a first baffle and a mounting plate arranged in sequence. The first baffle is connected to the back plate and extends toward the front cover. The mounting plate is connected to the side of the first baffle away from the water pump. The terminal block is disposed on the mounting plate.

7. The water module according to claim 6, characterized in that, The mounting plate includes multiple folded plates that are bent and connected in sequence, and the terminal block is disposed on one of the folded plates.

8. The water module according to claim 1, characterized in that, The housing includes a front panel and a rear panel arranged opposite each other along its own thickness direction, and the electrical component box is located on the side closer to the front panel; The water pump includes a water inlet, and in the thickness direction, the minimum distance between the edge of the first water-blocking structure facing the front cover and the front panel is less than or equal to the minimum distance between the water inlet and the front panel.

9. The water module according to claim 1, characterized in that, The water module also includes a wire pass bracket, which is connected inside the housing and located between the water pump and the electrical component box.

10. The water module according to claim 1, characterized in that, The housing includes a front panel, a rear panel, and a side panel that are arranged opposite to each other along its own thickness direction. The front panel is detachably connected to the side panel.

11. The water module according to claim 10, characterized in that, A flow guide groove is provided at the junction of the side panel and the front panel.

12. A heat pump system, characterized in that, Includes a water module and an outdoor unit as described in any one of claims 1 to 11, wherein the water module is connected to the outdoor unit via the refrigerant piping.

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