Heat pump water module and heat pump apparatus

Abstract

A heat pump water module and a heat pump apparatus are provided, relating to the field of heat pumps. The heat pump water module includes a tank and at least one water passage system provided in the tank, wherein the water passage system includes a cold-water pipeline and a hot-water pipeline, wherein the hot-water pipeline includes a hot-water inlet pipeline, an electric heater and a hot-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the electric heater. For the heat pump water module, the electric heater is provided to play a role of auxiliary heating, so as to quickly heat water to a required temperature and better satisfy customer's demand.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present disclosure claims the priority of the Chinese patent application No. 202411666310.7, and entitled “HEAT PUMP WATER MODULE AND HEAT PUMP APPARATUS”, filed on Nov. 19, 2024, the entire content of which is incorporated herein by Reference.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of heat pumps, and specifically to a heat pump water module and a heat pump apparatus.BACKGROUND ART

[0003] A heat pump apparatus includes a heat pump main unit, a water module, a terminal device, etc., where the heat pump main unit heats or cools water conveyed by the water module, and the water module conveys the heated or cooled water to the terminal device so as to meet users' requirements for domestic hot water, heating, etc.

[0004] In the prior art, in order to avoid a situation of insufficient heating of the heat pump main unit, an electric heater is provided in a hot-water pipeline in some cases. However, the electric heater of the heat pump water module in the prior art is not easy to disassemble or assemble, so that it is inconvenient to overhaul and maintain. Besides, in the prior art, heat pump water modules are mostly wall-mounted in installation scenarios, and generally provided with an outlet pipe at a lower side, which cannot satisfy demands of multiple installation scenarios. When the user has multiple use requirements, a plurality of heat pump water modules are usually installed so as to supply hot water or cold water to a plurality of terminal devices, respectively, which occupies a large space.SUMMARY

[0005] The first objective of the present disclosure is to provide a heat pump water module, so as to solve the technical problem that the electric heater of the heat pump water module is not easy to disassemble or assemble in the prior art.

[0006] The heat pump water module provided in the present disclosure includes a tank and at least one water passage system provided in the tank, where the water passage system includes a cold-water pipeline and a hot-water pipeline, where the hot-water pipeline includes a hot-water inlet pipeline, an electric heater and a hot-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the electric heater.

[0007] The heat pump water module provided in the present disclosure can produce the following beneficial effects.

[0008] Once the heat pump water module provided by the present disclosure is connected to the heat pump main unit and the terminal device, the cold-water pipeline of the heat pump water module can convey water in the terminal device to the heat pump main unit, and after the heat pump main unit heats or cools the water, the hot-water pipeline of the heat pump water module conveys hot water or cold water to the terminal device.

[0009] For the heat pump water module provided in the present disclosure, the electric heater is provided to play a role of auxiliary heating, so as to quickly heat water to a required temperature and better satisfy customer's demand. Moreover, since there is no pipeline blocking in front of the connection parts of two ends of the electric heater of the hot-water pipeline, after parts such as a front panel in front of the electric heater is dismantled or opened, the two ends of the electric heater can be conveniently disassembled and assembled, so that the electric heater is disassembled from between the hot-water inlet pipeline and the hot-water outlet pipeline, or the electric heater is installed between the hot-water inlet pipeline and the hot-water outlet pipeline, which can greatly improve overhauling and maintaining efficiency.

[0010] Further, a water inlet end of the electric heater and a water outlet end of the hot-water inlet pipeline are butt-jointed, and are fixedly connected through a first hoop, without pipeline blocking in front of a fastener of the first hoop; and / or a water outlet end of the electric heater and a water inlet end of the hot-water outlet pipeline are butt-jointed, and are fixedly connected through a second hoop, without pipeline blocking in front of a fastener of the second hoop. By fixedly connecting the water inlet end of the electric heater and the water outlet end of the hot-water inlet pipeline through the first hoop, and fixedly connecting the water outlet end of the electric heater and the water inlet end of the hot-water outlet pipeline through the second hoop, components and parts are easy to get, and are quite convenient to disassemble and assemble.

[0011] Further, the first hoop is a knob-type hoop, without pipeline blocking in front of a knob of the first hoop; and / or the second hoop is a knob-type hoop, without pipeline blocking in front of a knob of the second hoop. The two ends of the electric heater and corresponding pipeline are tightly clamped or released through the knobs, which can be operated with one hand, and which is convenient and quick.

[0012] Further, a first annular clamping groove is provided on an inner circumferential wall of the first hoop, a first annular protrusion is provided on an outer circumferential wall of the water inlet end of the electric heater, and a second annular protrusion is provided on an outer circumferential wall of the water outlet end of the hot-water inlet pipeline, where the first annular protrusion and the second annular protrusion are butt-jointed and both are clamped in the first annular clamping groove; and / or a second annular clamping groove is provided on an inner circumferential wall of the second hoop, a third annular protrusion is provided on an outer circumferential wall of the water outlet end of the electric heater, and a fourth annular protrusion is provided on an outer circumferential wall of the water inlet end of the hot-water outlet pipeline, where the third annular protrusion and the fourth annular protrusion are butt-jointed and both are clamped in the second annular clamping groove.

[0013] Further, an end surface of the first annular protrusion away from the second annular protrusion is a first annular inclined surface, and from a top to a bottom of the first annular protrusion, the first annular inclined surface is provided to incline in a direction away from the second annular protrusion; and / or an end surface of the second annular protrusion away from the first annular protrusion is a second annular inclined surface, and from a top to a bottom of the second annular protrusion, the second annular inclined surface is provided to incline in a direction away from the first annular protrusion;

[0014] and / or an end surface of the third annular protrusion away from the fourth annular protrusion is a third annular inclined surface, and from a top to a bottom of the third annular protrusion, the third annular inclined surface is provided to incline in a direction away from the fourth annular protrusion; and / or an end surface of the fourth annular protrusion away from the third annular protrusion is a fourth annular inclined surface, and from a top to a bottom of the fourth annular protrusion, the fourth annular inclined surface is provided to incline in a direction away from the third annular protrusion.

[0015] In this technical solution, various annular inclined surfaces configured all have an effect of guiding the hoops, so that the clamping grooves and the protrusions can be clamped more quickly and more accurately. Moreover, the configuration of the annular inclined surfaces enables tightness of the hoops to be adjustable, so that it can ensure tight fastening between the electric heater and corresponding pipeline, and reliability and tightness of connection between the two.

[0016] Further, the cold-water pipeline includes a cold-water inlet pipeline, a water pump assembly and a cold-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the water pump assembly. Since there is no pipeline blocking in front of the connection parts of two ends of the water pump assembly in the cold-water pipeline, after parts such as the front panel of the tank in front of the water pump assembly is dismantled or opened, the two ends of the water pump assembly can be conveniently disassembled and assembled, so that the water pump assembly is disassembled from between the cold-water inlet pipeline and the cold-water outlet pipeline, or the water pump assembly is installed between the cold-water inlet pipeline and the cold-water outlet pipeline, which can greatly improve overhauling and maintaining efficiency.

[0017] Further, the water pump assembly is fixedly connected to the cold-water inlet pipeline through a first nut, without pipeline blocking in front of the first nut; and / or the water pump assembly is fixedly connected to the cold-water outlet pipeline through a second nut, without pipeline blocking in front of the second nut. The water pump assembly can be disassembled and assembled by screwing the nuts, which is quite convenient.

[0018] Further, at least two water passage systems are provided, which are a first water passage system and a second water passage system respectively;

[0019] a cold-water pipeline of the first water passage system is a first cold-water pipeline, where a cold-water inlet pipeline of the first cold-water pipeline is a first cold-water inlet pipeline, a water pump assembly of the first cold-water pipeline is a first water pump assembly, and a cold-water outlet pipeline of the first cold-water pipeline is a first cold-water outlet pipeline;

[0020] a cold-water pipeline of the second water passage system is a second cold-water pipeline, where a cold-water inlet pipeline of the second cold-water pipeline is a second cold-water inlet pipeline, a water pump assembly of the second cold-water pipeline is a second water pump assembly, and a cold-water outlet pipeline of the second cold-water pipeline is a second cold-water outlet pipeline; and

[0021] the first water pump assembly and the second water pump assembly are provided vertically adjacent to each other, and located in a lower part or a middle part of the tank.

[0022] In this technical solution, since the water pump assemblies are relatively heavy, such configuration can lower down a center of gravity of the whole water module, so that the whole water module is more stable. The first cold-water pipeline and the second cold-water pipeline occupy a small space in a height direction, so that a height of the tank can be reduced, a center of gravity of the whole water module can also be lowered down, adaptability of the water module to use scenarios is improved while improving compactness and robustness of an overall structure of the water module, a container loading quantity is also improved, and thus transportation costs can be reduced.

[0023] Further, a hot-water pipeline of the first water passage system is a first hot-water pipeline, where a hot-water inlet pipeline of the first hot-water pipeline is a first hot-water inlet pipeline, and an electric heater of the first hot-water pipeline is a first electric heater; and the first electric heater is vertically arranged, and a water inlet end of the first electric heater is located at a bottom end thereof; the first hot-water inlet pipeline includes a first straight pipe, a first bent pipe and a U-shaped pipe that are fixedly connected in sequence, where an opening of the U-shaped pipe faces upwards and is provided in a front-rear direction; the first electric heater is located behind the first straight pipe, and a water inlet end of the first electric heater is connected to a water outlet end of the U-shaped pipe and is lower than the first straight pipe.

[0024] In this technical solution, the first water pump and the second water pump are horizontally arranged in a lower part or a middle part of the tank, the first electric heater is located behind the third horizontal pipe section of the first cold-water pipeline and the third horizontal pipe section of the second cold-water pipeline, which not only effectively utilizes a space behind the two third horizontal pipe sections and improves compactness of the overall structure, but also reduces the height of the tank compared with a solution in which various electric heaters are all horizontally arranged.

[0025] Further, a hot-water pipeline of the second water passage system is a second hot-water pipeline, where a hot-water inlet pipeline of the second hot-water pipeline is a second hot-water inlet pipeline, an electric heater of the second hot-water pipeline is a second electric heater, and a hot-water outlet pipeline of the second hot-water pipeline is a second hot-water outlet pipeline; and the second hot-water inlet pipeline is horizontally arranged, and the second electric heater is horizontally arranged between the second hot-water inlet pipeline and the second hot-water outlet pipeline.

[0026] In this technical solution, the second hot-water pipeline is substantially horizontally arranged, so that the occupied space is small, and the height of the tank can be effectively controlled.

[0027] Further, the hot-water outlet pipeline of the first hot-water pipeline is a first hot-water outlet pipeline, the first hot-water outlet pipeline includes a first hot-water outlet pipe section, a three-way valve and a second hot-water outlet pipe section that are fixedly connected; the three-way valve includes a valve body and an actuator, where a water inlet end and one water outlet end of the valve body are respectively connected to the first hot-water outlet pipe section and the second hot-water outlet pipe section, and the other water outlet end of the valve body communicates with the second hot-water outlet pipeline; and

[0028] the actuator is provided on top of the valve body, and there is a disassembling-assembling gap between the actuator and a top plate of the tank, where a value range of the disassembling-assembling gap is 10 mm-10 mm.

[0029] In this technical solution, when one terminal device, such as the domestic water tank, reaches a temperature, while the other terminal device, such as a heating terminal, has a high demand and is not satisfied, by adjusting the three-way valve, the first water passage system and the second water passage system can jointly provide a heat source or a cold source for the heating terminal, so as to quickly meet heating or cooling demand of the user. A sufficient gap is provided between the actuator and the top plate of the tank, so that it is more convenient to disassemble and assemble the actuator.

[0030] The second objective of the present disclosure lies in providing a heat pump apparatus, so as to solve the technical problem that the electric heater of the heat pump water module is not easy to disassemble or assemble in the prior art.

[0031] The heat pump apparatus provided in the present disclosure includes a heat pump main unit, a terminal device and the above heat pump water module, where the heat pump water module is connected between the heat pump main unit and the terminal device. The heat pump apparatus has all the beneficial effects of the above heat pump water module, which will not be elaborated herein.BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate technical solutions in embodiments of the present disclosure or in the prior art, drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Apparently, the drawings in the following description are only for embodiments of the present disclosure, and those ordinarily skilled in the art still could obtain other drawings according to these drawings without using any inventive efforts.

[0033] FIG. 1 is a first front view of a partial structure of a heat pump water module provided in embodiments of the present disclosure;

[0034] FIG. 2 is a second front view of a partial structure of the heat pump water module provided in embodiments of the present disclosure;

[0035] FIG. 3 is a structural schematic view of various pipelines in a tank of the heat pump water module provided in embodiments of the present disclosure;

[0036] FIG. 4 is a partial three-dimensional structural schematic view of the heat pump water module provided in embodiments of the present disclosure;

[0037] FIG. 5 is a structural schematic view of the heat pump water module, with an electric heater being disassembled, provided in embodiments of the present disclosure;

[0038] FIG. 6 is an exploded view of a partial structure of a hot-water pipeline of the heat pump water module provided in embodiments of the present disclosure;

[0039] FIG. 7 is a structural schematic view of the heat pump water module, with a water pump being disassembled, provided in embodiments of the present disclosure;

[0040] FIG. 8 is an exploded view of a partial structure of a cold-water pipeline of the heat pump water module provided in embodiments of the present disclosure;

[0041] FIG. 9 is a sectional view of a water pump assembly of the heat pump water module provided in embodiments of the present disclosure;

[0042] FIG. 10 is a sectional view of a first electric heater of the heat pump water module provided in embodiments of the present disclosure; and

[0043] FIG. 11 is a sectional view of a second electric heater of the heat pump water module provided in embodiments of the present disclosure.

[0044] Illustration of reference signs:

[0045] 100—tank; 120—rear wall plate; 130—left side plate; 140—right side plate; 150—top plate; 160—bottom plate;

[0046] 200—first cold-water pipeline; 210—first cold-water inlet pipeline; 211—first horizontal pipe section; 212—first bent portion; 213—first longitudinal pipe section; 214—second bent portion; 215—second horizontal pipe section; 220—T-shaped three-way joint; 221—first limiting protrusion; 230—first nut; 231—first body; 232—first limiting ring; 233—first limiting surface; 240—first pump; 241—first thread; 242—external thread; 250—first check valve; 251—internal thread; 252—second thread; 260—second nut; 261—second body; 262—second limiting ring; 263—second limiting surface; 270—first cold-water outlet pipeline; 271—third horizontal pipe section; 272—third bent portion; 273—second longitudinal pipe section; 274—fourth bent portion; 275—fourth horizontal pipe section; 2751—second limiting protrusion;

[0047] 300—first hot-water pipeline; 310—first hot-water inlet pipeline; 311—first straight pipe; 312—first bent pipe; 313—U-shaped pipe; 314—second annular protrusion; 3141—second annular inclined surface; 3142—second movable joint; 320—first electric heater; 321—first annular protrusion; 3211—first annular inclined surface; 322—third annular protrusion; 3221—third annular inclined surface; 330—first hot-water outlet pipeline; 331—first hot-water outlet pipe section; 3311—fourth annular protrusion; 3312—fourth annular inclined surface; 3313—third movable joint; 332—three-way valve; 3321—valve body; 3322—actuator; 333—second hot-water outlet pipe section; 340—first hoop; 341—first annular clamping groove; 350—second hoop; 351—second annular clamping groove;

[0048] 400—second cold-water pipeline; 410—second cold-water inlet pipeline; 420—filter; 430—first Y-shaped three-way joint; 440—second water pump; 450—second check valve; 470—second cold-water outlet pipeline;

[0049] 500—second hot-water pipeline; 510—second hot-water inlet pipeline; 520—second electric heater; 530—second hot-water outlet pipeline; 531—third hot-water outlet pipe section; 532—second Y-shaped three-way joint; 533—fourth hot-water outlet pipe section;

[0050] 600—first communicating pipeline; 610—inclined longitudinal straight pipe; 620—connecting elbow pipe;

[0051] 700—second communicating pipeline; 710—horizontal pipe portion; 720—longitudinal pipe portion;

[0052] 810—safety valve; 820—pressure gauge; 830—target-flow switch.DETAILED DESCRIPTION OF EMBODIMENTS

[0053] In order to make the above objectives, features and advantages of the present disclosure more obvious and more understandable, specific embodiments of the present disclosure will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are merely used to explain the present disclosure, but not to limit the present disclosure.

[0054] The present embodiment provides a heat pump water module and a heat pump apparatus. An electric heater and other parts of the heat pump water module are quite easy to disassemble and assemble, which can greatly improve overhauling and maintaining efficiency. The heat pump apparatus includes the above heat pump water module, and further includes a heat pump main unit and a terminal device, where the heat pump water module is connected between the heat pump main unit and the terminal device.

[0055] The heat pump water module provided in the present embodiment will be introduced in detail below.

[0056] As shown in FIG. 1 and FIG. 2, the heat pump water module provided in the present embodiment includes a tank 100 and at least one water passage system provided in the tank 100, where the water passage system includes a cold-water pipeline and a hot-water pipeline, where the hot-water pipeline includes a hot-water inlet pipeline, an electric heater and a hot-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the electric heater.

[0057] In the present embodiment, two water passage systems are provided, which are a first water passage system and a second water passage system respectively, the two water passage systems can be each connected with one terminal device, where the terminal device connected with the first water passage system is a first terminal device, the terminal device connected with the second water passage system is a second terminal device, and the first terminal device and the second terminal device are different. In practical application, the first terminal device is preferably a domestic water tank, and the second terminal device is preferably at least one of the following: an air conditioner, floor heating and a radiator group. The first terminal device and the second terminal device specifically can be provided according to actual situations, which will not be elaborated in the present embodiment. It should be noted that in other embodiments of the present disclosure, the number of water passage systems is not limited to two, but may also be one, three or four, which may be set according to specific requirements.

[0058] Once the heat pump water module provided by the present disclosure is connected to the heat pump main unit and the terminal device, the cold-water pipeline of the heat pump water module can convey water in the terminal device to the heat pump main unit, and after the heat pump main unit heats or cools the water, the hot-water pipeline of the heat pump water module conveys hot water or cold water to the terminal device.

[0059] In the above, the electric heater is provided to play a role of auxiliary heating, so as to quickly heat water to a required temperature and better satisfy customer's demand. Moreover, since there is no pipeline blocking in front of the connection parts of two ends of the electric heater of the hot-water pipeline, after parts such as a front panel in front of the electric heater is dismantled or opened, the two ends of the electric heater can be conveniently disassembled and assembled, so that the electric heater is disassembled from between the hot-water inlet pipeline and the hot-water outlet pipeline, or the electric heater is installed between the hot-water inlet pipeline and the hot-water outlet pipeline, which can greatly improve overhauling and maintaining efficiency.

[0060] In the present embodiment, a water outlet side of the hot-water pipeline and the cold-water inlet pipeline both penetrate through a right side plate 140 of the tank 100 and are both configured to be connected to the terminal device; and a water inlet side of the hot-water pipeline and the cold-water outlet pipeline both penetrate through a left side plate 130 of the tank 100 and are both configured to be connected to the heat pump main unit. Definitely, in other embodiments of the present disclosure, the water outlet side of the hot-water pipeline and the cold-water inlet pipeline may also both penetrate through the left side plate 130 of the tank 100, and the water inlet side of the hot-water pipeline and the cold-water outlet pipeline both penetrate through the right side plate 140 of the tank 100. With such configuration, two sides of the tank 100 can be respectively connected to the heat pump main unit and the terminal device, which is quite easy for after-sale installation and pipe connection, where the cold-water pipeline of the heat pump water module can convey water in the terminal device to the heat pump main unit, and after the heat pump main unit heats or cools the water, the hot-water pipeline of the heat pump water module conveys hot water or cold water to the terminal device. Moreover, with such configuration, both wall-mounted installation and floor-mounted installation are available, and thus application scenarios are also greatly increased.

[0061] Specifically, in the present embodiment, as shown in FIG. 4 to FIG. 6, FIG. 10 and FIG. 11, a water inlet end of the electric heater and a water outlet end of the hot-water inlet pipeline are butt-jointed, and are fixedly connected through a first hoop 340, without pipeline blocking in front of a fastener of the first hoop 340. A water outlet end of the electric heater and a water inlet end of the hot-water outlet pipeline are butt-jointed and are fixedly connected through a second hoop 350, without pipeline blocking in front of a fastener of the second hoop 350. By fixedly connecting the water inlet end of the electric heater and the water outlet end of the hot-water inlet pipeline through the first hoop 340, and fixedly connecting the water outlet end of the electric heater and the water inlet end of the hot-water outlet pipeline through the second hoop 350, components and parts are easy to get, and are quite convenient to disassemble and assemble.

[0062] It should be noted herein that, in other embodiments of the present disclosure, it is also feasible that only the water inlet end of the electric heater and the water outlet end of the hot-water inlet pipeline are connected through a hoop, while the water outlet end of the electric heater and the water inlet end of the hot-water outlet pipeline are fixedly connected through a structure such as a flange; alternatively, only the water outlet end of the electric heater and the water inlet end of the hot-water outlet pipeline are connected through a hoop, while the water inlet end of the electric heater and the water outlet end of the hot-water inlet pipeline are connected through a structure such as a flange. Definitely, in other embodiments of the present disclosure, the two ends of the electric heater both can be detachably and fixedly connected to corresponding pipeline through a flange. That is, as long as the electric heater is detachable and easy to detach, connection structures of the two ends thereof may not be specifically limited in the present disclosure.

[0063] Specifically, in the present embodiment, the first hoop 340 is a knob-type hoop, without pipeline blocking in front of a knob of the first hoop 340; and the second hoop 350 is a knob-type hoop, without pipeline blocking in front of a knob of the second hoop 350. The two ends of the electric heater and corresponding pipeline are tightly clamped or released through the knobs, which can be operated with one hand, and which is convenient and quick.

[0064] Specifically, in the present embodiment, a first annular clamping groove 341 is provided on an inner circumferential wall of the first hoop 340, a first annular protrusion 321 is provided on an outer circumferential wall of the water inlet end of the electric heater, and a second annular protrusion 314 is provided on an outer circumferential wall of the water outlet end of the hot-water inlet pipeline, where the first annular protrusion 321 and the second annular protrusion 314 are butt-jointed and both are clamped in the first annular clamping groove 341; a second annular clamping groove 351 is provided on an inner circumferential wall of the second hoop 350, a third annular protrusion 322 is provided on an outer circumferential wall of the water outlet end of the electric heater, and a fourth annular protrusion 3311 is provided on an outer circumferential wall of the water inlet end of the hot-water outlet pipeline, where the third annular protrusion 322 and the fourth annular protrusion 3311 are butt-jointed and both are clamped in the second annular clamping groove 351.

[0065] It should be noted that, the second annular protrusion 314 can be directly provided at the water outlet end of the hot-water inlet pipeline, and a second movable joint 3142 can also be used, as shown in FIG. 10, which is a hollow T-shaped joint, where the second movable joint 3142 is provided outside or inside the water outlet end of the hot-water inlet pipeline, and a radial protrusion of the second movable joint 3142 forms the second annular protrusion 314. Similarly, the fourth annular protrusion 3311 can be directly provided at the water inlet end of the hot-water outlet pipeline, and a third movable joint 3313 can also be used, which is a hollow T-shaped joint, where the third movable joint 3313 is provided outside or inside the water inlet end of the hot-water outlet pipeline, and a radial protrusion of the third movable joint 3313 forms the fourth annular protrusion 3311.

[0066] Specifically, in the present embodiment, as shown in FIG. 10, an end surface of the first annular protrusion 321 away from the second annular protrusion 314 is a first annular inclined surface 3211, and from a top to a bottom of the first annular protrusion 321, the first annular inclined surface 3211 is provided to incline in a direction away from the second annular protrusion 314; and an end surface of the second annular protrusion 314 away from the first annular protrusion 321 is a second annular inclined surface 3141, and from a top to a bottom of the second annular protrusion 314, the second annular inclined surface 3141 is provided to incline in a direction away from the first annular protrusion 321. In other embodiments of the present disclosure, it is also feasible to provide only either the first annular inclined surface 3211 or the second annular inclined surface 3141.

[0067] As shown in FIG. 10 again, an end surface of the third annular protrusion 322 away from the fourth annular protrusion 3311 is a third annular inclined surface 3221, and from a top to a bottom of the third annular protrusion 322, the third annular inclined surface 3221 is provided to incline in a direction away from the fourth annular protrusion 3311; and an end surface of the fourth annular protrusion 3311 away from the third annular protrusion 322 is a fourth annular inclined surface 3312, and from a top to a bottom of the fourth annular protrusion 3311, the fourth annular inclined surface 3312 is provided to incline in a direction away from the third annular protrusion 322. In other embodiments of the present disclosure, it is also feasible to provide only either the third annular inclined surface 3221 or the fourth annular inclined surface 3312.

[0068] Various annular inclined surfaces configured as above all have an effect of guiding the hoops, so that the clamping grooves and the protrusions can be clamped more quickly and more accurately. Moreover, the configuration of the annular inclined surfaces enables tightness of the hoops to be adjustable, so that it can ensure tight fastening between the electric heater and corresponding pipeline, and reliability and tightness of connection between the two.

[0069] In order to further ensure the tightness of connection, as shown in FIG. 10, the opposite end surfaces of the first annular protrusion 321 and the second annular protrusion 314 are provided with a sealing ring (not shown in the drawing), the opposite end surfaces of the third annular protrusion 322 and the fourth annular protrusion 3311 are also provided with a sealing ring (not shown in the drawing), and in order to limit the sealing rings, at least one of two opposite end surfaces is also provided with an annular groove.

[0070] For the heat pump water module provided in the present embodiment, in addition to advantages such as easy disassembly of the electric heater, the cold-water pipeline thereof is further provided with a water pump, and the water pump is also quite convenient to disassemble and assemble.

[0071] Specifically, as shown in FIG. 2, in the embodiment, the cold-water pipeline includes a cold-water inlet pipeline, a water pump assembly and a cold-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the water pump assembly. Since there is no pipeline blocking in front of the connection parts of two ends of the water pump assembly in the cold-water pipeline, after parts such as the front panel of the tank 100 in front of the water pump assembly is dismantled or opened, the two ends of the water pump assembly can be conveniently disassembled and assembled, so that the water pump assembly is disassembled from between the cold-water inlet pipeline and the cold-water outlet pipeline, or the water pump assembly is installed between the cold-water inlet pipeline and the cold-water outlet pipeline, which can greatly improve overhauling and maintaining efficiency.

[0072] Specifically, in the present embodiment, as shown in FIG. 2, the water pump assembly is fixedly connected to the cold-water inlet pipeline through a first nut 230, without pipeline blocking in front of the first nut 230; and the water pump assembly is fixedly connected to the cold-water outlet pipeline through a second nut 260, without pipeline blocking in front of the second nut 260. With such configuration form, the water pump assembly can be disassembled and assembled by screwing the nuts, which is quite convenient.

[0073] It should be noted herein that, in other embodiments of the present disclosure, it is also feasible that only the water inlet end or only the water outlet end of the water pump assembly is connected to corresponding pipeline through a nut, while the other is connected in other detachable fixed connection modes. For example, only the water inlet end of the water pump assembly is connected to the cold-water inlet pipeline through a nut, while the water outlet end of the water pump assembly is fixedly connected to the cold-water outlet pipeline through a structure such as a flange. Definitely, in other embodiments of the present disclosure, the two ends of the water pump assembly also may be both detachably and fixedly connected to corresponding pipelines through a flange. That is, as long as the water pump is detachable and easy to detach, connection structures of the two ends thereof may not be specifically limited in the present disclosure.

[0074] More specifically, in the present embodiment, as shown in FIG. 2, the cold-water inlet pipeline is fixedly provided with a communicating joint, where a water outlet end of the communicating joint is connected to the water inlet end of the water pump assembly through a first nut 230. In the above, the communicating joint includes a two-way joint and a three-way joint, which can be selected according to specific requirements. As shown in FIG. 2, in the first water passage system, the water inlet end of the water pump assembly is connected with a three-way joint, where a first end of the three-way joint is connected with the water inlet end of the water pump assembly through the first nut 230, a second end is connected with the cold-water inlet pipeline, and a third end is configured to be connected with another cold-water pipeline (such as the cold-water inlet pipeline of the second water passage system). In the second water passage system, the water inlet end of the water pump assembly is connected with a two-way joint, where a water outlet end of the two-way joint is connected with the water inlet end of the water pump assembly through a first nut 230, and a water inlet end of the two-way joint is connected with the water outlet end of the cold-water inlet pipeline. By providing the communicating joint at the water outlet end of the cold-water inlet pipeline, while ensuring easy assembly and easy disassembly between the cold-water inlet pipeline and the water pump assembly, transformation to the water outlet end of the cold-water inlet pipeline can also be avoided, which is quite convenient.

[0075] In the present embodiment, as shown in FIG. 8 and FIG. 9, the first nut 230 includes a first body 231 and a first limiting ring 232 fixedly provided on the first body 231. The first limiting ring 232 has a first limiting surface 233. The communicating joint is provided with a first limiting protrusion 221, where the first limiting protrusion 221 is in an annular shape, and an outer diameter of the first limiting protrusion 221 is smaller than an inner diameter of the first body 231 and greater than a minimum inner diameter of the first limiting ring 232. The water pump assembly is provided with a first thread 241, an internal thread of the first nut 230 is in threaded connection with the first thread 241, and the first limiting surface 233 tightly abuts against the first limiting protrusion 221. With such configuration form, when the water inlet end of the water pump assembly needs to be disassembled, only the first nut230 needs to be unscrewed from the first thread 241, which is quite quick and convenient. Moreover, under a blocking effect of the first limiting protrusion 221, the first nut 230 does not fall off.

[0076] It should be noted herein that, in other embodiments of the present disclosure, positions where the first limiting protrusion 221 and the first thread 241 are provided may also be exchanged, in which case, the first nut 230 is sleeved outside the water inlet end of the water pump assembly, that is, the water inlet end of the water pump assembly is provided with the first limiting protrusion 221, the water outlet end of the communicating joint is provided with the first thread 241, the first nut 230 is sleeved outside the water inlet end of the water pump assembly, and the water inlet end of the water pump assembly is fixedly connected to the water outlet end of the communicating joint, which is also quite convenient for disassembly and assembly.

[0077] It should also be noted that, the first limiting protrusion 221 can be directly provided at the water outlet end of the communicating joint, and a first movable joint, which is a hollow T-shaped joint, can also be used, where the first movable joint is fixedly provided inside or outside the water outlet end of the communicating joint, and a radial protrusion of the first movable joint forms the first limiting protrusion 221.

[0078] In the present embodiment, as shown in FIG. 8 and FIG. 9, the water pump assembly includes a water pump and a check valve. The water pump is configured to provide power for flowing of water. The check valve, also called as a one-way valve, is configured to prevent backflow of water. The water pump is connected to the communicating joint, and the check valve is connected to the cold-water outlet pipeline. Moreover, a water inlet end of the check valve is provided with an internal thread 251, a water outlet end of the water pump is provided with an external thread 242, and the two are fixedly connected through the external thread 242 and the internal thread 251. Definitely, in other embodiments of the present disclosure, it is also be feasible that the water outlet end of the water pump is provided with the internal thread 251, and the water inlet end of the check valve is provided with the external thread 242, in which case, the water outlet end of the water pump and the water inlet end of the check valve can still be fixedly connected through the external thread 242 and the internal thread 251. With such configuration form, when the water pump needs to be disassembled, the water pump assembly can be disassembled from the cold-water pipeline, and then the water pump and the check valve can be disassembled. Definitely, in other embodiments of the present disclosure, the water inlet end of the check valve and the water outlet end of the water pump may also be directly connected through the second nut 260, in which case, when the water pump needs to be disassembled, only the water pump needs to be disassembled.

[0079] It should be noted herein that, in other embodiments of the present disclosure, the water pump assembly can further include a water pump and accessories thereof.

[0080] As shown in FIG. 8 and FIG. 9, the second nut 260 includes a second body 261 and a second limiting ring 262 fixedly provided on the second body 261, where the second limiting ring 262 has a second limiting surface 263. The cold-water outlet pipeline is provided with a second limiting protrusion 2751, where the second limiting protrusion 2751 is in an annular shape, and an outer diameter of the second limiting protrusion 2751 is smaller than an inner diameter of the second body 261 and greater than a minimum inner diameter of the second limiting ring 262. The check valve is provided with a second thread 252, an internal thread of the second nut 260 is in threaded connection with the second thread 252, and the second limiting surface 263 tightly abuts against the second limiting protrusion 2751. With such configuration form, when the water pump needs to be disassembled, the second nut 260 can be unscrewed from the second thread 252, that is, the water pump assembly is disassembled from the cold-water pipeline, and then the water pump and the check valve are disassembled; moreover, under a blocking effect of the second limiting protrusion 2751, the second nut 260 does not fall off.

[0081] In other embodiments of the present disclosure, positions of the second limiting protrusion 2751 and the second thread 252 can also be exchanged, in which case, the second nut 260 is sleeved outside the water outlet end of the check valve, that is, the water outlet end of the check valve is provided with the second limiting protrusion 2751, the water inlet end of the cold-water outlet pipeline is provided with the second thread 252, the second nut 260 is sleeved outside the water outlet end of the check valve, and the water inlet end of the cold-water outlet pipeline and the water outlet end of the check valve are fixedly connected, which is also quite convenient for disassembly and assembly.

[0082] In the present embodiment, as shown in FIG. 2, the water pump assembly of the first water passage system and the water pump assembly of the second water passage system are provided vertically adjacent to each other, located in a lower part or a middle part of the tank 100, and provided close to a bottom plate 160. Since the water pump assemblies are relatively heavy, such configuration can lower down a center of gravity of the whole water module, so that the whole water module is more stable.

[0083] Specifically, in the present embodiment, as shown in FIG. 2 and in conjunction with FIG. 3 and FIG. 8, in the present embodiment, a cold-water pipeline of the first water passage system is a first cold-water pipeline 200, where a cold-water inlet pipeline of the first cold-water pipeline 200 is a first cold-water inlet pipeline 210, a water pump assembly of the first cold-water pipeline 200 is a first water pump assembly, and a cold-water outlet pipeline of the first cold-water pipeline 200 is a first cold-water outlet pipeline 270. A cold-water pipeline of the second water passage system is a second cold-water pipeline 400, where a cold-water inlet pipeline of the second cold-water pipeline 400 is a second cold-water inlet pipeline 410, a water pump assembly of the second cold-water pipeline 400 is a second water pump assembly, and a cold-water outlet pipeline of the second cold-water pipeline 400 is a second cold-water outlet pipeline 470. The first water pump assembly and the second water pump assembly are provided vertically adjacent to each other, located in a lower part or a middle part of the tank 100, and provided close to the bottom plate 160. With such configuration, the first cold-water pipeline 200 and the second cold-water pipeline 400 occupy a small space in a height direction, so that a height of the tank 100 can be reduced, a center of gravity of the whole water module can also be lowered down, adaptability of the water module to use scenarios is improved while improving compactness and robustness of an overall structure of the water module, a container loading quantity is also improved, and thus transportation costs can be reduced.

[0084] Specifically, in the present embodiment, as shown in FIG. 3 and FIG. 8, the first cold-water inlet pipeline 210 and the second cold-water inlet pipeline 410 have substantially the same direction. The cold-water inlet pipelines each include, from the water inlet end thereof to the water outlet end thereof, a first horizontal pipe section 211, a first bent portion 212, a first longitudinal pipe section 213, a second bent portion 214 and a second horizontal pipe section 215 in sequence, where the first longitudinal pipe section 213 extends from the first bent portion 212 to the second bent portion 214 in a direction away from the front panel. The first cold-water outlet pipeline 270 and the second cold-water outlet pipeline 470 have the same direction. The cold-water outlet pipelines each include, from the water outlet end thereof to the water inlet end thereof, a third horizontal pipe section 271, a third bent portion 272, a second longitudinal pipe section 273, a fourth bent portion 274 and a fourth horizontal pipe section 275 in sequence, where the second longitudinal pipe section 273 extends from the third bent portion 272 to the fourth bent portion 274 in a direction away from the front panel. The first water pump assembly is horizontally arranged and connected between the second horizontal pipe section and the fourth horizontal pipe section of the first cold-water pipeline 200; and the second water pump assembly is horizontally arranged and connected between the second horizontal pipe section and the fourth horizontal pipe section of the second cold-water pipeline 400.

[0085] With the above configuration form, in a top view angle, the first cold-water pipeline 200 and the second cold-water pipeline 400 are both substantially in an “Ω” shape, and the first cold-water pipeline 200 and the second cold-water pipeline 400 occupy a small space in the height direction, so that the height of the tank 100 can be reduced, and the center of gravity of the whole water module can also be lowered down. The first water pump assembly and the second water pump assembly are respectively provided between corresponding first longitudinal pipe section 213 and second longitudinal pipe section 273, and are provided to face forward, which is quite convenient for disassembly, assembly and overhaul. A space between the first longitudinal pipe section 213 and the right side plate 140 can be used for arranging other pipelines or components, such as a hot-water pipeline; and a space between the second longitudinal pipe section 273 and the left side plate 130 can also be used to arrange other pipelines or components, such as the electric heater. With such configuration, the whole tank 100 is quite stable, structures therein are also quite compact, a utilization rate of space is high, a volume and an occupied space of the whole heat pump water module can be greatly reduced, and thus application scenarios can be expanded, a container loading quantity can also be improved, and transportation costs are reduced.

[0086] In the present embodiment, as shown in FIG. 2, the check valve of the first water passage system is a first check valve 250, and is configured to prevent backflow of water in the first cold-water pipeline 200; the check valve of the second water passage system is a second check valve 450, and is configured to prevent backflow of water in the second cold-water pipeline 400, and both are fixedly connected to a rear wall plate 120 of the tank 100. With such configuration, positions of the check valves are fixed and limited, and at the same time, the water pumps at two ends of the check valves and the cold-water outlet pipelines are also better supported and restricted, thereby being beneficial to improve stability of the whole cold-water pipeline.

[0087] In the present embodiment, as shown in FIG. 2, a filter 420 is provided at the water inlet end of the second cold-water pipeline 400, and it can filter impurities of the second terminal device, thus protecting a water delivery pipeline, the water pump, the heat pump main unit, etc. Moreover, the filter 420 is built in the tank 100, and the filter 420 does not need to be installed between the water module and the second terminal device in after-sale installation, so that installation efficiency can be greatly improved, and user experience is improved.

[0088] As shown in FIG. 2 again, in the present embodiment, a first communicating pipeline 600 is further connected between the second cold-water inlet pipeline 410 and the first cold-water inlet pipeline 210, and one end of the first communicating pipeline 600 connected with the second cold-water inlet pipeline 410 is located between the filter 420 and the second water pump assembly.

[0089] Specifically, in the present embodiment, the first communicating pipeline 600 includes an inclined longitudinal straight pipe 610 and a connecting elbow pipe 620 that are fixedly provided. The first cold-water inlet pipeline 210 is provided with a T-shaped three-way joint 220, where two through ends of the T-shaped three-way joint 220 are respectively connected to the first cold-water inlet pipeline 210 and the first water pump assembly, and a third end of the T-shaped three-way joint 220 is connected to the inclined longitudinal straight pipe 610. The second cold-water inlet pipeline 410 is provided with a filter 420 and a first Y-shaped three-way joint 430, where two symmetrical ends of the first Y-shaped three-way joint 430 are respectively connected to a water inlet end of the first bent portion of the second cold-water inlet pipeline 410 and the connecting elbow pipe 620, and a third end of the first Y-shaped three-way joint 430 is connected to a water outlet end of the filter 420; and a water inlet end of the filter 420 is connected to a water outlet end of the first horizontal pipe section of the second cold-water inlet pipeline 410. By providing the T-type three-way joint 220 and the first Y-type three-way joint 430, and by connecting the first cold-water inlet pipeline 210 and the second cold-water inlet pipeline 410 through the first communicating pipeline 600, the first cold-water pipeline 200 and the second cold-water pipeline 400 can supplement water to each other, so that a water volume, a water pressure, etc. in the two cold-water pipelines are more balanced.

[0090] As shown in FIG. 2 again, in the present embodiment, the first communicating pipeline 600 is provided with a pressure gauge 820 configured to detect a water pressure in the pipeline. Since the first cold-water pipeline 200 and the second cold-water pipeline 400 communicate through the first communicating pipeline 600, in other embodiments of the present disclosure, the pressure gauge 820 may also be provided in the first cold-water pipeline 200 or the second cold-water pipeline 400.

[0091] In the present embodiment, the water inlet end of the first cold-water pipeline 200, the water outlet end of a first hot-water pipeline 300, the water inlet end of the second cold-water pipeline 400, and the water outlet end of the second hot-water pipeline 500 all penetrate through the right side plate 140 of the tank 100, and are arranged in sequence from bottom to top. The water outlet end of the first cold-water pipeline 200, the water inlet end of the first hot-water pipeline 300, the water outlet end of the second cold-water pipeline 400, and the water inlet end of the second hot-water pipeline 500 all penetrate through the left side plate 130 of the tank 100, and are provided in sequence from bottom to top. Definitely, in other embodiments of the present disclosure, the water inlet end and the water outlet end of various pipelines may also be exchanged, that is, the water inlet end of the first cold-water pipeline 200, the water outlet end of the first hot-water pipeline 300, the water inlet end of the second cold-water pipeline 400, and the water outlet end of the second hot-water pipeline 500 all penetrate through the left side plate 130, and the water outlet end of the first cold-water pipeline 200, the water inlet end of the first hot-water pipeline 300, the water outlet end of the second cold-water pipeline 400, and the water inlet end of the second hot-water pipeline 500 all penetrate through the right side plate 140. With such configuration, the water inlet end of the cold-water pipeline and the water outlet end of the hot-water pipeline of various water passage systems are adjacent to each other, facilitating connection with the terminal device; the water outlet end of the cold-water pipeline and the water inlet end of the hot-water pipeline of various water passage systems are adjacent to each other, facilitating connection with the heat pump main unit.

[0092] Specifically, in the present embodiment, the hot-water pipeline of the first water passage system is the first hot-water pipeline 300. The hot-water inlet pipeline of the first hot-water pipeline 300 is a first hot-water inlet pipeline 310, and the electric heater of the first hot-water pipeline 300 is a first electric heater 320. The first electric heater 320 is vertically arranged, and a water inlet end of the first electric heater 320 is located at a bottom end thereof. The first hot-water inlet pipeline 310 includes a first straight pipe 311, a first bent pipe 312 and a U-shaped pipe 313 that are fixedly connected in sequence, where an opening of the U-shaped pipe 313 faces upwards and is provided in a front-rear direction. The first electric heater 320 is located behind the first straight pipe 311, and a water inlet end of the first electric heater 320 is connected to a water outlet end of the U-shaped pipe 313 and is lower than the first straight pipe 311. With such configuration form, the first water pump 240 and the second water pump 440 are horizontally arranged in a lower part or a middle part of the tank 100, the first electric heater 320 is located behind the third horizontal pipe section of the first cold-water pipeline 200 and the third horizontal pipe section of the second cold-water pipeline 400, which not only effectively utilizes a space behind the two third horizontal pipe sections and improves compactness of the overall structure, but also reduces the height of the tank 100 compared with a solution in which various electric heaters are all horizontally arranged.

[0093] Specifically, in the present embodiment, a hot-water pipeline of the second water passage system is a second hot-water pipeline 500. A hot-water inlet pipeline of the second hot-water pipeline 500 is a second hot-water inlet pipeline 510, an electric heater of the second hot-water pipeline 500 is a second electric heater 520, and a hot-water outlet pipeline of the second hot-water pipeline 500 is a second hot-water outlet pipeline 530. The second hot-water inlet pipeline 510 is horizontally arranged, and the second electric heater 520 is horizontally arranged between the second hot-water inlet pipeline 510 and the second hot-water outlet pipeline 530. The second hot-water pipeline 500 is substantially horizontally arranged, so that the occupied space is small, and the height of the tank 100 can be effectively controlled.

[0094] Specifically, in the present embodiment, the hot-water outlet pipeline of the first hot-water pipeline 300 is a first hot-water outlet pipeline 330. The first hot-water outlet pipeline 330 includes a first hot-water outlet pipe section 331, a three-way valve 332 and a second hot-water outlet pipe section 333 that are fixedly connected. A water inlet end and a water outlet end of the three-way valve 332 are respectively connected to the first hot-water outlet pipe section 331 and the second hot-water outlet pipe section 333, and the other water outlet end of the three-way valve 332 communicates with the second hot-water outlet pipeline 530 through a second communicating pipeline 700.

[0095] With the above configuration form, when one terminal device, such as the domestic water tank, reaches a temperature, while the other terminal device, such as a heating terminal, has a high demand and is not satisfied, by adjusting the three-way valve 332, the first water passage system and the second water passage system can jointly provide a heat source or a cold source for the heating terminal, so as to quickly meet heating or cooling demand of the user. Moreover, providing the three-way valve 332 also facilitates the disassembly and assembly of the second water passage system, and when the installation scenario changes, the disassembly and assembly of the second water passage system can be directly completed through the three-way valve 332. In addition, when three and more water passage systems need to be installed, a multi-way valve body or a plurality of three-way valves 332 can be added to the first water passage system or the second water passage system, so that the hot-water pipelines communicate with each other to complement each other.

[0096] As shown in FIG. 1, the three-way valve 332 includes a valve body 3321 and an actuator 3322. A water inlet end and one water outlet end of the valve body 3321 are respectively connected to the first hot-water outlet pipe section 331 and the second hot-water outlet pipe section 333, and the other water outlet end of the valve body 3321 communicates with the second hot-water outlet pipeline 530. The actuator 3322 is provided on top of the valve body 3321, and there is a disassembling-assembling gap between the actuator 3322 and a top plate 150 of the tank 100, where a value range of the disassembling-assembling gap is 10 mm-30 mm. A height of a connection part of the actuator 3322 and the valve body 3321 is not too high, and this value range can meet requirements of disassembling and assembling the actuator 3322. Further, the disassembling-assembling gap may take a value from 20 mm to 30 mm, thus providing a larger space for disassembling and assembling the actuator 3322, so as to improve disassembling and assembling convenience thereof.

[0097] In the present embodiment, as shown in FIG. 3, the second communicating pipeline 700 is in an L shape, and includes a horizontal pipe portion 710 and a longitudinal pipe portion 720 that are fixedly provided. The second hot-water outlet pipeline 530 includes a third hot-water outlet pipe section 531, a second Y-shaped three-way joint 532 and a fourth hot-water outlet pipe section 533 that are fixedly connected in sequence. Two symmetrical ends of the second Y-shaped three-way joint 532 are respectively connected to a water outlet end of the third hot-water outlet pipe section 531 and the horizontal pipe portion 710, and a third end of the second Y-shaped three-way joint 532 is connected to a water inlet end of the fourth hot-water outlet pipe section 533. With such configuration, the second communicating pipeline 700 has a simple structure, and the second hot-water outlet pipeline 530 is also substantially arranged in a horizontal direction, which not only facilitates flowing of water, but also occupies a small height space, thereby being beneficial to reduce the overall height.

[0098] In the present embodiment, as shown in FIG. 3, the second communicating pipeline 700 is provided with a safety valve 810. When the first water passage system and the second water passage system operate, the safety valve 810 can release pressure for the first hot-water pipeline 300 and the second hot-water pipeline 500 in time. Definitely, in other embodiments of the present disclosure, the safety valve 810 can also be provided in the second hot-water pipeline 500.

[0099] In the present embodiment, as shown in FIG. 1, between the three-way valve 332 and the first electric heater 320 and the second hot-water inlet pipeline 510, a target flow switch 830, which may also be called as a water flow switch, is further provided, and is configured to detect a fluid in the hot-water pipeline, so as to effectively protect the electric heater, prevent problems such as burning of the electric heater due to an excessively small flow and an excessive pressure of the water passage system, and ensure normal operation of the water passage system.

[0100] Finally, it should further be noted that herein, relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, while it is not necessarily required or implied that these entities or operations have any such practical relationship or order. Moreover, the terms such as “comprise”, “contain” or any other variants thereof are intended to encompass non-exclusive inclusion, such that a process, a method, an article or an apparatus including a series of elements not only includes those elements, but also includes other elements that are not explicitly listed, or further includes elements inherent in such process, method, article or apparatus. In the absence of further limitations, an element specified by the phrase “comprising a . . . ” does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the specified element.

[0101] The above description of the disclosed embodiments will enable those skilled in the art to realize or use the present disclosure. Various modifications to the embodiments will be apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Accordingly, the present disclosure will not be limited to the embodiments shown herein, but is to meet the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat pump water module, comprising a tank and at least one water passage system provided in the tank, wherein the water passage system comprises a cold-water pipeline and a hot-water pipeline, whereinthe hot-water pipeline comprises a hot-water inlet pipeline, an electric heater and a hot-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the electric heater.

2. The heat pump water module according to claim 1, wherein a water inlet end of the electric heater and a water outlet end of the hot-water inlet pipeline are butt-jointed, and are fixedly connected through a first hoop, without pipeline blocking in front of a fastener of the first hoop;and / or a water outlet end of the electric heater and a water inlet end of the hot-water outlet pipeline are butt-jointed, and are fixedly connected through a second hoop, without pipeline blocking in front of a fastener of the second hoop.

3. The heat pump water module according to claim 2, wherein the first hoop is a knob-type hoop, without pipeline blocking in front of a knob of the first hoop;and / or the second hoop is a knob-type hoop, without pipeline blocking in front of a knob of the second hoop.

4. The heat pump water module according to claim 3, wherein a first annular clamping groove is provided on an inner circumferential wall of the first hoop, a first annular protrusion is provided on an outer circumferential wall of the water inlet end of the electric heater, and a second annular protrusion is provided on an outer circumferential wall of the water outlet end of the hot-water inlet pipeline, wherein the first annular protrusion and the second annular protrusion are butt-jointed and both are clamped in the first annular clamping groove;and / or a second annular clamping groove is provided on an inner circumferential wall of the second hoop, a third annular protrusion is provided on an outer circumferential wall of the water outlet end of the electric heater, and a fourth annular protrusion is provided on an outer circumferential wall of the water inlet end of the hot-water outlet pipeline, wherein the third annular protrusion and the fourth annular protrusion are butt-jointed and both are clamped in the second annular clamping groove.

5. The heat pump water module according to claim 4, wherein an end surface of the first annular protrusion away from the second annular protrusion is a first annular inclined surface, and from a top to a bottom of the first annular protrusion, the first annular inclined surface is provided to incline in a direction away from the second annular protrusion; and / or an end surface of the second annular protrusion away from the first annular protrusion is a second annular inclined surface, and from a top to a bottom of the second annular protrusion, the second annular inclined surface is provided to incline in a direction away from the first annular protrusion;and / or an end surface of the third annular protrusion away from the fourth annular protrusion is a third annular inclined surface, and from a top to a bottom of the third annular protrusion, the third annular inclined surface is provided to incline in a direction away from the fourth annular protrusion; and / or an end surface of the fourth annular protrusion away from the third annular protrusion is a fourth annular inclined surface, and from a top to a bottom of the fourth annular protrusion, the fourth annular inclined surface is provided to incline in a direction away from the third annular protrusion.

6. The heat pump water module according to claim 1, wherein the cold-water pipeline comprises a cold-water inlet pipeline, a water pump assembly and a cold-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the water pump assembly.

7. The heat pump water module according to claim 6, wherein the water pump assembly is fixedly connected to the cold-water inlet pipeline through a first nut, without pipeline blocking in front of the first nut;and / or the water pump assembly is fixedly connected to the cold-water outlet pipeline through a second nut, without pipeline blocking in front of the second nut.

8. The heat pump water module according to claim 6, wherein at least two water passage systems are provided, which are a first water passage system and a second water passage system respectively, whereina cold-water pipeline of the first water passage system is a first cold-water pipeline, wherein a cold-water inlet pipeline of the first cold-water pipeline is a first cold-water inlet pipeline, a water pump assembly of the first cold-water pipeline is a first water pump assembly, and a cold-water outlet pipeline of the first cold-water pipeline is a first cold-water outlet pipeline;a cold-water pipeline of the second water passage system is a second cold-water pipeline, wherein a cold-water inlet pipeline of the second cold-water pipeline is a second cold-water inlet pipeline, a water pump assembly of the second cold-water pipeline is a second water pump assembly, and a cold-water outlet pipeline of the second cold-water pipeline is a second cold-water outlet pipeline; andthe first water pump assembly and the second water pump assembly are provided vertically adjacent to each other, and located in a lower part or a middle part of the tank.

9. The heat pump water module according to claim 8, wherein a hot-water pipeline of the first water passage system is a first hot-water pipeline, wherein a hot-water inlet pipeline of the first hot-water pipeline is a first hot-water inlet pipeline, and an electric heater of the first hot-water pipeline is a first electric heater; andthe first electric heater is vertically arranged, and a water inlet end of the first electric heater is located at a bottom end thereof; the first hot-water inlet pipeline comprises a first straight pipe, a first bent pipe and a U-shaped pipe that are fixedly connected in sequence, wherein an opening of the U-shaped pipe faces upwards and is provided in a front-rear direction; the first electric heater is located behind the first straight pipe, and a water inlet end of the first electric heater is connected to a water outlet end of the U-shaped pipe and is lower than the first straight pipe.

10. The heat pump water module according to claim 9, wherein a hot-water pipeline of the second water passage system is a second hot-water pipeline, wherein a hot-water inlet pipeline of the second hot-water pipeline is a second hot-water inlet pipeline, an electric heater of the second hot-water pipeline is a second electric heater, and a hot-water outlet pipeline of the second hot-water pipeline is a second hot-water outlet pipeline; andthe second hot-water inlet pipeline is horizontally arranged, and the second electric heater is horizontally arranged between the second hot-water inlet pipeline and the second hot-water outlet pipeline.

11. The heat pump water module according to claim 10, wherein the hot-water outlet pipeline of the first hot-water pipeline is a first hot-water outlet pipeline, the first hot-water outlet pipeline comprises a first hot-water outlet pipe section, a three-way valve and a second hot-water outlet pipe section that are fixedly connected;the three-way valve comprises a valve body and an actuator, wherein a water inlet end and one water outlet end of the valve body are respectively connected to the first hot-water outlet pipe section and the second hot-water outlet pipe section, and the other water outlet end of the valve body communicates with the second hot-water outlet pipeline; andthe actuator is provided on top of the valve body, and there is a disassembling-assembling gap between the actuator and a top plate of the tank, wherein a value range of the disassembling-assembling gap is 10 mm-30 mm.

12. A heat pump apparatus, comprising a heat pump main unit, a terminal device and the heat pump water module according to claim 1, wherein the heat pump water module is connected between the heat pump main unit and the terminal device.

13. The heat pump water module according to claim 2, wherein the cold-water pipeline comprises a cold-water inlet pipeline, a water pump assembly and a cold-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the water pump assembly.

14. The heat pump water module according to claim 3, wherein the cold-water pipeline comprises a cold-water inlet pipeline, a water pump assembly and a cold-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the water pump assembly.

15. The heat pump water module according to claim 4, wherein the cold-water pipeline comprises a cold-water inlet pipeline, a water pump assembly and a cold-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the water pump assembly.

16. The heat pump water module according to claim 5, wherein the cold-water pipeline comprises a cold-water inlet pipeline, a water pump assembly and a cold-water outlet pipeline that are detachably and fixedly connected, without pipeline blocking in front of connection parts of two ends of the water pump assembly.

17. The heat pump apparatus according to claim 12, wherein a water inlet end of the electric heater and a water outlet end of the hot-water inlet pipeline are butt-jointed, and are fixedly connected through a first hoop, without pipeline blocking in front of a fastener of the first hoop;and / or a water outlet end of the electric heater and a water inlet end of the hot-water outlet pipeline are butt-jointed, and are fixedly connected through a second hoop, without pipeline blocking in front of a fastener of the second hoop.

18. The heat pump apparatus according to claim 17, wherein the first hoop is a knob-type hoop, without pipeline blocking in front of a knob of the first hoop;and / or the second hoop is a knob-type hoop, without pipeline blocking in front of a knob of the second hoop.

19. The heat pump apparatus according to claim 18, wherein a first annular clamping groove is provided on an inner circumferential wall of the first hoop, a first annular protrusion is provided on an outer circumferential wall of the water inlet end of the electric heater, and a second annular protrusion is provided on an outer circumferential wall of the water outlet end of the hot-water inlet pipeline, wherein the first annular protrusion and the second annular protrusion are butt-jointed and both are clamped in the first annular clamping groove;and / or a second annular clamping groove is provided on an inner circumferential wall of the second hoop, a third annular protrusion is provided on an outer circumferential wall of the water outlet end of the electric heater, and a fourth annular protrusion is provided on an outer circumferential wall of the water inlet end of the hot-water outlet pipeline, wherein the third annular protrusion and the fourth annular protrusion are butt-jointed and both are clamped in the second annular clamping groove.

20. The heat pump apparatus according to claim 19, wherein an end surface of the first annular protrusion away from the second annular protrusion is a first annular inclined surface, and from a top to a bottom of the first annular protrusion, the first annular inclined surface is provided to incline in a direction away from the second annular protrusion; and / or an end surface of the second annular protrusion away from the first annular protrusion is a second annular inclined surface, and from a top to a bottom of the second annular protrusion, the second annular inclined surface is provided to incline in a direction away from the first annular protrusion;and / or an end surface of the third annular protrusion away from the fourth annular protrusion is a third annular inclined surface, and from a top to a bottom of the third annular protrusion, the third annular inclined surface is provided to incline in a direction away from the fourth annular protrusion; and / or an end surface of the fourth annular protrusion away from the third annular protrusion is a fourth annular inclined surface, and from a top to a bottom of the fourth annular protrusion, the fourth annular inclined surface is provided to incline in a direction away from the third annular protrusion.

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