Machine head assembly and heat pump water heater

Abstract

The utility model relates to the technical field of heat pumps, and provides a machine head assembly and a heat pump water heater, the machine head assembly comprises a shell, a waterway module and a heat pump module, and a containing cavity is formed in the shell; the waterway module is used for conveying water; the heat pump module comprises a refrigerant pipeline, a first heat exchanger and a second heat exchanger, the first heat exchanger and the second heat exchanger are sequentially arranged on the refrigerant pipeline, the first heat exchanger is used for conducting heat exchange with water of the water path module, the second heat exchanger is used for conducting heat exchange with airflow, and the water path module and the heat pump module are both arranged in the containing cavity. According to the machine head assembly provided by the embodiment of the invention, the assembly procedures can be reduced, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of heat pump technology, and in particular to a head assembly and a heat pump water heater. Background Technology

[0002] This section is intended to provide background or context for embodiments of this application. The description herein is not intended to imply that it is prior art simply because it is included in this section.

[0003] Heat pump water heaters use refrigerant pipes to enter the water tank and regulate the water temperature, thus providing hot and / or cold water for daily household use. The demand for heat pump water heaters is gradually increasing, especially in Europe where there is a huge demand. In related technologies, the heat pump water heater's unit and water tank are transported separately. After the unit and tank arrive at their destination, they undergo secondary processing and assembly, resulting in a cumbersome assembly process and excessively high costs. Utility Model Content

[0004] In view of this, the present application aims to provide a head unit assembly and a heat pump water heater that can reduce assembly steps and lower costs.

[0005] The first aspect of this application provides a nose cone assembly, including:

[0006] The outer shell forms a receiving cavity;

[0007] Water circuit module, used for transporting water;

[0008] The heat pump module includes a refrigerant pipeline, a first heat exchanger, and a second heat exchanger. The first heat exchanger and the second heat exchanger are sequentially arranged in the refrigerant pipeline. The first heat exchanger is used to exchange heat with the water in the water circuit module, and the second heat exchanger is used to exchange heat with the airflow. Both the water circuit module and the heat pump module are arranged in the receiving cavity.

[0009] In some embodiments, the first heat exchanger includes a refrigerant channel and a water flow channel, the refrigerant channel being connected to the refrigerant pipeline and the water flow channel being connected to the water circuit module.

[0010] In some embodiments, the head assembly includes a water pump disposed in the water circuit module and located within the receiving cavity.

[0011] In some embodiments, the head assembly includes a fan module disposed within the receiving cavity, and the water circuit module, the water pump, and the first heat exchanger are all located on the same side of the fan module along a first direction, which intersects with the vertical direction.

[0012] In some embodiments, the head assembly includes a fan module with a fan housing, the fan housing forming an air inlet duct, an air outlet duct, and a flow cavity, the flow cavity connecting the air inlet duct and the air outlet duct, and the second heat exchanger disposed within the flow cavity.

[0013] In some embodiments, the fan module includes a fan wheel disposed in the air outlet duct, the air inlet duct and the air outlet duct are located on both sides of the second heat exchanger along a first direction, the first direction intersecting the vertical direction.

[0014] In some embodiments, the fan housing includes an inlet housing and an outlet housing, the inlet housing forming the inlet air duct, the outlet housing forming the outlet air duct, and the inlet housing and the outlet housing being connected to jointly define the flow cavity.

[0015] In some embodiments, the housing includes a cover and a drip tray, the cover being disposed on one side of the drip tray to jointly define the receiving cavity.

[0016] In some embodiments, the outer casing includes guide ribs, the water receiving tray forms a guide channel, the guide ribs are disposed in the guide channel, and the second heat exchanger is supported on the guide ribs.

[0017] In some embodiments, the water receiving tray has a drain outlet communicating with the flow guiding channel, and there are multiple flow guiding ribs, all of which are higher than the height of the drain outlet.

[0018] A second aspect of this application provides a heat pump water heater, comprising:

[0019] The nose assembly described in any of the preceding claims;

[0020] A water tank assembly includes a water storage chamber and a circulation pipeline, wherein the circulation pipeline connects the water storage chamber and the water circuit module.

[0021] In some embodiments, the head assembly and the water tank assembly are detachably connected.

[0022] In some embodiments, there are multiple head units, and the water circuit modules of the multiple head units are connected in series or in parallel in the circulation pipeline.

[0023] In some embodiments, the head assembly is used to match at least one of the plurality of water tank assemblies, wherein at least two of the water tank assemblies have different capacities of water storage chambers.

[0024] In some embodiments, a plane perpendicular to the vertical direction is used as the projection plane, and at least a portion of the projections of the head assembly and the water tank assembly do not overlap.

[0025] In some embodiments, the circulation pipeline includes a return pipe and an outlet pipe, the water circuit module includes a return connector and an outlet connector, the return pipe connects the return connector and the water storage chamber, the outlet pipe connects the outlet connector and the water storage chamber, and the return port of the return pipe located in the water storage chamber is higher than the outlet port of the outlet pipe located in the water storage chamber.

[0026] The head assembly provided in this application embodiment has two main advantages. First, the outer shell protects the water circuit module and the heat pump module, which are installed within a housing cavity. This design is compact, highly integrated, and easy to install and maintain. Second, both the water circuit module and the heat pump module are housed within the housing cavity. The first heat exchanger is used for heat exchange with the water in the water circuit module. In other words, both the first and second heat exchangers are located within the outer shell. The heat exchange location between the refrigerant and the water has been shifted from the water tank in related technologies to the head assembly. The head assembly can independently realize the phase change process of the refrigerant and the temperature regulation process of the water, eliminating the need for external piping or devices for transporting the refrigerant. This means that no additional refrigerant piping or devices are required within the water tank assembly; only the water tank assembly needs to be connected to the water circuit module. Welding, vacuuming, and refrigerant flushing of the refrigerant piping are no longer necessary. This not only eliminates the need for secondary assembly of refrigerant piping and devices, reducing workload and assembly difficulty, but also improves the versatility of the head assembly. Attached Figure Description

[0027] Figure 1 A cross-sectional view of a nose assembly provided in some embodiments of this application from one perspective;

[0028] Figure 2 A cross-sectional view of a nose assembly provided in some embodiments of this application from another perspective;

[0029] Figure 3 A schematic diagram of the assembly of a water circuit module, a heat pump module, a water pump, and a fan module provided in some embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the structure of a second heat exchanger provided in some embodiments of this application;

[0031] Figure 5 Exploded views of a fan module provided in some embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the water receiving tray provided in some embodiments of this application;

[0033] Figure 7 This application provides schematic diagrams of the structure of a heat pump water heater according to some embodiments.

[0034] Figure 8 for Figure 7 Exploded view of the structure shown;

[0035] Figure 9 A cross-sectional view of a water tank assembly provided in some embodiments of this application from another perspective;

[0036] Figure 10 This is a schematic diagram showing the positions of the head assembly and water tank assembly provided in some embodiments of this application.

[0037] Figure 11 This is a schematic diagram showing the positions of the head assembly and water tank assembly provided in other embodiments of this application.

[0038] Explanation of reference numerals in the attached figures

[0039] Heat pump water heater 100;

[0040] Head assembly 1;

[0041] Outer shell 11; Receiving cavity 11a;

[0042] 111 cover; 111a air inlet; 111b air outlet;

[0043] Water receiving tray 112; flow guiding channel 112a; drain outlet 112b;

[0044] 113; 114; Filter structure;

[0045] Water circuit module 12; return water connector 121; outlet water connector 122;

[0046] Heat pump module 13; First heat exchanger 131; Second heat exchanger 132; Refrigerant piping 133; Compressor 134;

[0047] Water pump 14;

[0048] Fan module 15; Fan housing 151; Inlet air duct 151a; Outlet air duct 151b; Flow chamber 151c; Inlet housing 1511; Inlet port 1511a; Outlet housing 1512; Outlet port 1512a; Fan wheel 152;

[0049] Water tank assembly 2; water storage chamber 2a;

[0050] Circulation pipe 21; return water pipe 211; return water outlet 211a; outlet pipe 212; outlet water outlet 212a;

[0051] Inner liner 22; Box body 23;

[0052] Fastener 3. Detailed Implementation

[0053] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0054] In the description of the embodiments of this application, the "first direction" orientation or positional relationship is based on Figure 1 , Figure 2 The orientation or positional relationship shown, the "up and down direction" orientation or positional relationship is based on Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 10 and Figure 11 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0055] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features / embodiments can form different implementation methods. To avoid unnecessary repetition, the various possible combinations of various specific technical features / embodiments in this application will not be described separately. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] In related technologies, the compressor head includes a refrigerant pipe for circulating refrigerant, which extends into a water tank and heats the water in the tank using the refrigerant. Therefore, the assembly process of the compressor head and water tank involves multiple welding, vacuuming, refrigerant charging, trial runs, and repackaging to make the compressor head and water tank a complete product, resulting in increased workload and higher production costs.

[0057] Please see Figures 1 to 8 , Figure 10 and Figure 11 This application provides a head assembly 1, including a housing 11, a water circuit module 12, and a heat pump module 13. The housing 11 forms a receiving cavity 11a; the water circuit module 12 is used to transport water; the heat pump module 13 includes a refrigerant pipeline 133, a first heat exchanger 131, and a second heat exchanger 132. The first heat exchanger 131 and the second heat exchanger 132 are sequentially disposed in the refrigerant pipeline 133. The first heat exchanger 131 is used to exchange heat with the water in the water circuit module 12, and the second heat exchanger 132 is used to exchange heat with the airflow. Both the water circuit module 12 and the heat pump module 13 are disposed within the receiving cavity 11a.

[0058] The housing 11a provides installation space for the water circuit module 12 and the heat pump module 13. In this way, the housing 11 not only provides better protection, but also integrates the water circuit module 12 and the heat pump module 13 into the housing 11, resulting in a compact structure that is easy to install and maintain.

[0059] The water circuit module 12 is used to transport water, that is, the water circuit module 12 can provide the driving force to move the water. For example, the water circuit module 12 can drive the water outside the housing 11 into the housing 11 and exchange heat with the first heat exchanger 131, and then transport the water out of the housing 11 after heat exchange. The first heat exchanger 131 and the water circuit module 12 can realize the heating and transportation of water.

[0060] Refrigerant pipe 133 is used to circulate refrigerant. Refrigerant is a flowable fluid that easily absorbs heat to become a gas and easily releases heat to become a liquid. Refrigerant can undergo phase changes after absorbing or releasing heat.

[0061] The specific type of refrigerant is not limited; for example, it can be R12 (dichlorodifluoromethane), R22 Freon, or carbon dioxide, etc.

[0062] The first heat exchanger 131 and the second heat exchanger 132 are sequentially arranged in the refrigerant pipeline 133. That is, the first heat exchanger 131 and the second heat exchanger 132 are connected in series in the refrigerant pipeline 133 and are connected to the refrigerant pipeline 133. The refrigerant can flow through the first heat exchanger 131 and the second heat exchanger 132 in sequence through the refrigerant pipeline 133.

[0063] The first heat exchanger 131 and the second heat exchanger 132 can realize heat exchange between water, refrigerant and airflow. The refrigerant, as an intermediate medium, releases heat from the airflow to the water or absorbs heat from the water.

[0064] The first heat exchanger 131 can regulate the temperature of the liquid water, for example, by raising and / or lowering the temperature. Taking heating the liquid water with the first heat exchanger 131 as an example, the first heat exchanger 131 is a device in which a refrigerant releases heat to heat the liquid water; the first heat exchanger 131 is a condenser. Exemplarily, the refrigerant located within the first heat exchanger 131 is a high-temperature gaseous refrigerant, which releases heat and transforms into a low-temperature liquid refrigerant, causing the flowing liquid water to absorb heat and rise in temperature. It can be understood that if the first heat exchanger 131 lowers the temperature of the liquid water, then the first heat exchanger 131 can be an evaporator.

[0065] The second heat exchanger 132 can regulate the temperature of the airflow, for example, by raising and / or lowering the airflow temperature. Taking lowering the airflow temperature as an example, the second heat exchanger 132 is a device where a refrigerant absorbs heat to cool the airflow; the second heat exchanger 132 is an evaporator. Exemplarily, the refrigerant located within the second heat exchanger 132 is a low-temperature liquid refrigerant. The low-temperature liquid refrigerant absorbs heat and transforms into a low-temperature gaseous refrigerant, and the flowing airflow releases heat and cools down. It can be understood that if the second heat exchanger 132 raises the temperature of the water, then the second heat exchanger 132 can be a condenser.

[0066] Airflow can be air.

[0067] It should be noted that in this application, high temperature and low temperature are only relative terms and there is no limit to the numerical range of temperature.

[0068] In this application, the head unit 1 can independently realize the phase change process of the refrigerant and the temperature regulation process of the water. In this way, the refrigerant and water exchange heat within the head unit 1. The entire heat pump module 13 is located inside the outer casing 11, eliminating the need for external piping or devices for transporting the refrigerant within the head unit 1. In other words, no additional refrigerant piping or devices are required within the water tank assembly 2. The water tank assembly 2 only needs to be connected to the water circuit module 12, eliminating the need for welding, vacuuming, and refrigerant flushing of the refrigerant piping. This not only saves the need for secondary assembly of refrigerant piping and devices, reducing workload and assembly difficulty—for example, the assembly of the head unit 1 and water tank assembly 2 can be completed in the user's home, eliminating the need to assemble refrigerant piping and devices in a factory using specialized equipment—but also improves the versatility of the head unit 1. For example, the head unit 1 can be adapted to existing or newly purchased water tanks in the user's home.

[0069] The source of water in water tank assembly 2 is not limited. For example, water tank assembly 2 can be connected to a tap water pipe, which continuously supplies tap water to water tank assembly 2.

[0070] The head assembly 1 provided in this application embodiment has, on the one hand, a housing 11 that protects the water circuit module 12 and the heat pump module 13. The water circuit module 12 and the heat pump module 13 are installed in the receiving cavity 11a. The structure is compact and highly integrated, making it easy to install and maintain. On the other hand, both the water circuit module 12 and the heat pump module 13 are located within the housing cavity 11a. The first heat exchanger 131 is used for heat exchange with the water in the water circuit module 12. That is, both the first heat exchanger 131 and the second heat exchanger 132 are located inside the outer shell 11. The heat exchange position between the refrigerant and the water is transferred from the water tank in the related technology to the head assembly 1. The head assembly 1 can independently realize the phase change process of the refrigerant and the temperature regulation process of the water. There is no need to assemble pipes or devices for transporting refrigerant outside the head assembly 1. That is, there is no need to set up additional refrigerant pipes or devices inside the water tank assembly 2. It is only necessary to connect the water tank assembly 2 to the water circuit module 12. There is no need to weld, vacuum and flush the refrigerant pipes. In this way, not only can the secondary assembly of refrigerant pipes and devices be saved, reducing the workload and assembly difficulty, but also the versatility of the head assembly 1 can be improved.

[0071] In one embodiment, please refer to Figure 1 and Figure 2 The outer casing 11 is roughly cylindrical, which makes the head assembly 1 not only easy to install and transport, but also more aesthetically pleasing, thus improving the user experience.

[0072] It should be noted that the outer shell 11 can also be in other shapes, such as a hexahedron or a prism. The shape of the outer shell 11 is not limited.

[0073] In some embodiments, please refer to Figure 1 and Figure 3 The heat pump module 13 includes a compressor 134, which is connected to the refrigerant line 133. That is, the compressor 134 is connected to the refrigerant line 133. The compressor 134 is used to compress the refrigerant to increase its pressure. For example, a first heat exchanger 131, a second heat exchanger 132, and the compressor 134 are connected in series on the refrigerant line 133. As an example, low-temperature gaseous refrigerant flows from the second heat exchanger 132 into the compressor 134. After being pressurized by the compressor 134, the low-temperature gaseous refrigerant is converted into high-temperature, high-pressure gaseous refrigerant. The high-temperature gaseous refrigerant then flows from the compressor 134 into the first heat exchanger 131. This cycle repeats continuously, achieving heat exchange and the recycling of the refrigerant.

[0074] In some embodiments, the heat pump module 13 includes a throttling device disposed in the refrigerant pipeline 133. The throttling device is located between the first heat exchanger 131 and the second heat exchanger 132, so that the high-pressure, low-temperature liquid refrigerant flowing out of the first heat exchanger 131 is throttled and depressurized by the throttling device and then becomes a low-temperature, low-pressure liquid refrigerant that enters the second heat exchanger 132.

[0075] The throttling device is any one of a throttling valve, an electronic expansion valve, and a capillary tube. Exemplarily, in one embodiment, the throttling device is a throttling valve. In another embodiment, the throttling device is an electronic expansion valve. In yet another embodiment, the throttling device is a capillary tube.

[0076] It should be noted that in this application, high pressure and low pressure are only relative terms and do not limit the numerical range of pressure.

[0077] The heat pump module 13 may also include a reversing device disposed in the refrigerant pipeline 133, the reversing device being used to change the flow direction of the refrigerant in the refrigerant pipeline 133.

[0078] For example, the refrigerant flows in the forward direction in the refrigerant line 133. The refrigerant can flow out from the outlet of the compressor 134 and flow through the first heat exchanger 131, the throttling device and the second heat exchanger 132 in sequence, and then flow back into the compressor 134 through the suction port of the compressor 134. The reversing device switches the refrigerant flow direction to the reverse direction. The refrigerant flows in the reverse direction in the refrigerant line 133. The refrigerant can flow out from the outlet of the compressor 134 and flow through the second heat exchanger 132, the throttling device and the first heat exchanger 131 in sequence, and then flow back into the compressor 134 through the suction port of the compressor 134.

[0079] It is understandable that "forward" and "reverse" are two opposite flow directions of the refrigerant in refrigerant pipe 133. For example, if the forward direction can be clockwise, then the reverse direction is counterclockwise. Or, if the forward direction can be counterclockwise, then the reverse direction is clockwise.

[0080] In this embodiment, by changing the flow direction of the refrigerant through the reversing device, cooling and heating of the water can be achieved. In other words, the heat pump module 13 can achieve two temperature regulation modes for water: heating and cooling.

[0081] In some embodiments, the heat pump module 13 may also lack a commutation device. In this case, the refrigerant flows in a single direction, and the heat pump module 13 can only achieve one of the regulation modes of cooling and heating the water.

[0082] Reversing devices include, but are not limited to, four-way valves.

[0083] In some embodiments, the first heat exchanger 131 includes a refrigerant channel and a water flow channel. The refrigerant channel is connected to a refrigerant pipeline 133, and the water flow channel is connected to a water circuit module 12. Thus, refrigerant can flow from the refrigerant pipeline 133 into the refrigerant channel and then flow back into the refrigerant pipeline 133; water can be transported through the water circuit module 12 to the water flow channel and then flow back into the water circuit module 12. In this way, heat exchange is achieved between the refrigerant and the water as they flow through the first heat exchanger 131.

[0084] For example, there are multiple refrigerant channels and multiple water channels. These multiple refrigerant channels and multiple water channels can be distributed alternately in sequence, thereby increasing the heat exchange area and improving the heat exchange efficiency.

[0085] It should be noted that in this application, "multiple" refers to a quantity including two or more.

[0086] In one embodiment, please refer to Figure 4 The first heat exchanger 131 is a plate heat exchanger. That is, the first heat exchanger 131 includes multiple stacked heat exchange plates, and any one of a refrigerant channel and a water flow channel is formed between two adjacent heat exchange plates. The two sides of each heat exchange plate along the thickness direction are the refrigerant channel and the water flow channel, respectively.

[0087] The first heat exchanger 131 can also adopt other forms of heat exchange devices. For example, the first heat exchanger 131 may include a container shell and heat exchange tubes, with the container shell forming a water flow channel and the heat exchange tubes housed within a heat exchange cavity, the space inside the heat exchange tubes serving as a refrigerant channel. As another example, the first heat exchanger 131 can also adopt a double-layered tube design, with the space of the inner tube serving as a refrigerant channel and the space of the outer tube serving as a water flow channel.

[0088] In one embodiment, the second heat exchanger 132 is a finned tube heat exchanger. Of course, the second heat exchanger 132 can also adopt other structural forms, which will not be listed in this application.

[0089] In some embodiments, please refer to Figure 1 and Figure 3 The head assembly 1 includes a water pump 14, which is disposed in the water circuit module 12 and located in the receiving cavity 11a.

[0090] The water pump 14 refers to a drive structure that provides driving force for the movement of water. By driving the water to move through the water pump 14, the movement speed of the water can be increased, thereby increasing the water flow rate and improving the heat exchange efficiency of the first heat exchanger 131 and the water.

[0091] In some embodiments, please refer to Figure 1By installing a water pump 14 within the housing 11a, the housing 11 not only protects the water pump 14 from damage caused by collisions with external structures, but also eliminates the need for users to prepare their own drive structure to move the water, saving the steps and costs associated with installing such a structure. Furthermore, the addition of the water pump 14 makes the head assembly 1 more functionally comprehensive, thereby improving its applicability and increasing the product's market competitiveness.

[0092] In some embodiments, please refer to Figure 1 , Figure 3 , Figure 5 and Figure 8 The head assembly 1 includes a fan module 15, which is disposed in the receiving cavity 11a. The water circuit module 12, the water pump 14 and the first heat exchanger 131 are all located on the same side of the fan module 15 along the first direction, which intersects with the vertical direction.

[0093] The fan module 15 promotes airflow, thereby improving the heat exchange efficiency between the second heat exchanger 132 and the airflow. The fan module 15 is housed within the housing 11a, and the outer casing 11 also provides good protection for the fan module 15. The water circuit module 12, the water pump 14, and the first heat exchanger 131 are all located on the same side of the fan module 15 along the first direction. The close proximity of the water circuit module 12, the water pump 14, and the first heat exchanger 131 reduces the length of the pipes and shortens the path of the water between the various structural components. It also helps to avoid increasing the vertical dimensions of the head assembly 1 to some extent.

[0094] It should be noted that the intersection of the first direction and the up / down direction can be oblique or perpendicular. Down refers to the direction facing the ground, and up is the opposite side of down.

[0095] In some embodiments, please refer to Figure 3 and Figure 5 The head assembly 1 includes a fan module 15 with a fan housing 151. The fan housing 151 forms an inlet air duct 151a, an outlet air duct 151b, and a flow passage 151c. The flow passage 151c connects the inlet air duct 151a and the outlet air duct 151b. A second heat exchanger 132 is disposed in the flow passage 151c. That is, external airflow enters the fan housing 151, flows through the inlet air duct 151a and the flow passage 151c in sequence, and then flows out through the outlet air duct 151b.

[0096] Please see Figure 1 and Figure 2The second heat exchanger 132 is disposed within the flow cavity 151c. On one hand, the flow cavity 151c provides installation space for the second heat exchanger 132, facilitating the assembly of the second heat exchanger 132 and the fan casing 151. The fan casing 151 also protects the second heat exchanger 132. On the other hand, when the airflow passes through the flow cavity 151c, it can make full contact with the second heat exchanger 132, ensuring rapid heat transfer and improving heat exchange efficiency.

[0097] In one embodiment, please refer to Figure 5 At least part of the fan casing 151 has a curved surface. This design is beneficial for airflow in the air inlet duct 151a, the flow chamber 151c and the air outlet duct 151b, and promotes the airflow speed.

[0098] In some embodiments, please refer to Figure 1 and Figure 5 The fan module 15 includes a fan wheel 152, which is disposed in the air outlet duct 151b. The air inlet duct 151a and the air outlet duct 151b are located on both sides of the second heat exchanger 132 along the first direction, which intersects with the vertical direction.

[0099] Wind turbine 152 refers to a structure that can rotate to drive airflow. See also... Figure 1 , Figure 2 and Figure 5 The impeller 152 is installed in the air outlet duct 151b, which can effectively drive the airflow, so that the airflow passes through the second heat exchanger 132 from the air inlet duct 151a and is quickly discharged from the air outlet duct 151b.

[0100] Please continue reading. Figure 2 The air inlet duct 151a and the air outlet duct 151b are located on both sides of the second heat exchanger 132 along the first direction. That is to say, the air inlet duct 151a, the flow chamber 151c and the air outlet duct 151b are distributed along the first direction. With this design, the dimensions of the fan casing 151 in the vertical direction can be smaller.

[0101] In one embodiment, the rotation axis of the wind turbine 152 extends along a first direction.

[0102] In one embodiment, the fan module 15 includes a motor, which is connected to the impeller 152 via a transmission connection. That is, the driving force of the motor can be transmitted to the impeller 152, thereby driving the impeller 152 to rotate and accelerating the airflow.

[0103] In one embodiment, the motor can be located on the side of the impeller 152 away from the second heat exchanger 132. This results in a more compact structural layout.

[0104] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 5The fan housing 151 includes an air inlet housing 1511 and an air outlet housing 1512. The air inlet housing 1511 forms an air inlet duct 151a, and the air outlet housing 1512 forms an air outlet duct 151b. The air inlet housing 1511 and the air outlet housing 1512 are connected to jointly define the flow passage cavity 151c.

[0105] The air inlet housing 1511 and the air outlet housing 1512 can be detachably connected or non-detachably connected.

[0106] In the embodiments of this application, unless otherwise stated, detachable connections include, but are not limited to, snap-fit ​​connections, screw connections, or bolt connections. Non-detachable connections include, but are not limited to, welding or bonding.

[0107] For example, the fan housing 151 has a split structure, so the inlet housing 1511 and the outlet housing 1512 can be manufactured separately. This not only reduces production difficulty but also facilitates subsequent replacement of the inlet housing 1511 and the outlet housing 1512 separately, reducing maintenance costs. For instance, if the inlet housing 1511 is damaged, only the inlet housing 1511 needs to be removed and replaced, without replacing the entire fan housing 151. Similarly, if the outlet housing 1512 is damaged, only the outlet housing 1512 needs to be removed and replaced, without replacing the entire fan housing 151.

[0108] The inlet casing 1511 and the outlet casing 1512 are fastened together along a first direction to jointly define the flow cavity 151c. Thus, during the assembly of the fan casing 151, the inlet casing 1511 and the outlet casing 1512 can be fastened together to define the flow cavity 151c first, and then the second heat exchanger 132 can be installed into the flow cavity 151c. Alternatively, the second heat exchanger 132 can be assembled with one of the inlet casing 1511 and the outlet casing 1512 first, and then both can be assembled with the other of the inlet casing 1511 and the outlet casing 1512. This simplifies the operation and reduces installation difficulty. For example, the second heat exchanger 132 can be assembled with the inlet casing 1511 first, and then the outlet casing 1512 can be fastened onto the inlet casing 1511 to complete the assembly. For example, the second heat exchanger 132 is first assembled with the air outlet shell 1512, and then the air inlet shell 1511 is fastened to the air outlet shell 1512 to complete the assembly.

[0109] During the disassembly of the fan casing 151, the second heat exchanger 132 can be removed directly from the flow cavity 151c, or the inlet casing 1511 and the outlet casing 1512 can be separated first before removing the second heat exchanger 132. This facilitates the maintenance and replacement of the second heat exchanger 132.

[0110] In one embodiment, please refer to Figure 3 and Figure 5The top of the air inlet housing 1511 has an air inlet 1511a communicating with the air inlet duct 151a, and the top of the air outlet housing 1512 has an air outlet 1512a communicating with the air outlet duct 151b. That is, airflow enters the air inlet housing 1511 from the air inlet 1511, passes through the air inlet duct 151a, the flow chamber 151c, and the air outlet duct 151b in sequence, and then exits from the air outlet 1512a. The air inlet 1511a and air outlet 1512a are located at the top of the air inlet housing 1511 and the air outlet housing 1512, respectively, which reduces the intake of ground dust, debris, or liquid into the air outlet housing 1512, reducing contamination of the water circuit module 12, the heat pump module 13, and the fan module 15, and extending the service life of the head assembly 1.

[0111] In other embodiments, the fan housing 151 is a one-piece molded structure, which means that the structure is manufactured by one-piece molding process. In this way, the assembly steps of the air inlet housing 1511 and the air outlet housing 1512 can be reduced, and the stability of the fan housing 151 can be improved.

[0112] In some embodiments, please refer to Figure 2 , Figure 6 and Figure 8 The outer casing 11 includes a cover 111 and a drip tray 112. The cover 111 covers one side of the drip tray 112 to jointly define the receiving cavity 11a. After the second heat exchanger 132 exchanges heat with the airflow, it produces condensate. The drip tray 112 is used to collect condensate and other liquids to prevent condensate from overflowing and causing pollution.

[0113] The cover 111 and the water tray 112 can be detachably or non-detachably connected.

[0114] Please see Figure 2 The cover 111 is positioned above the water tray 112, and the cover 111 and the water tray 112 are detachably connected, facilitating the installation and removal of the cover 111 and the water tray 112 by operators. Furthermore, after removing the cover 111, operators can directly observe the condition of components such as the water circuit module 12, the heat pump module 13, and the fan housing 151, facilitating subsequent maintenance and component replacement. It also makes it easier to clean the condensate in the water tray 112, extending the service life of the head assembly 1.

[0115] In one embodiment, the outer shell 11 is a split structure, so that the shell cover 111 and the water tray 112 can be manufactured separately, reducing the difficulty of production.

[0116] In one embodiment, please refer to Figure 2 and Figure 8The top of the cover 111 has an air inlet 111a and an air outlet 111b. The air inlet 111a is connected to the air intake 1511a, and the air outlet 111b is connected to the air outlet 1512a. That is to say, external airflow can flow into the fan housing 151 through the air inlet 111a and the air intake 1511a, pass through the air intake duct 151a, the flow chamber 151c and the air outlet duct 151b in sequence, and then be discharged from the outer casing 11 through the air outlet 1512a and the air outlet 111b. The air inlet 111a and the air outlet 111b are located on the top of the cover 111, which can further reduce the intake of ground dust, debris or liquid into the air outlet housing 1512, reduce the contamination of the water circuit module 12, the heat pump module 13 and the fan module 15, and extend the service life of the head assembly 1.

[0117] In one embodiment, please refer to Figure 2 The housing 11 includes two filter structures 114, which are respectively located at the air inlet 111a and the air outlet 111b. For example, each filter structure 114 has multiple flow ports, which allow airflow while preventing external water, dust particles, and other impurities from passing through. In other words, airflow can enter and exit the housing 11 through the flow ports of the filter structures 114. The filter structures 114 prevent external water, dust particles, and other impurities from entering the housing 11 from the air inlet 111a and the air outlet 111b, thus preventing damage to the components of the head assembly 1 and providing good protection.

[0118] In some embodiments, please refer to Figure 6 The outer casing 11 includes guide ribs 113, and the water receiving tray 112 forms a guide channel 112a. The guide ribs 113 are disposed in the guide channel 112a, and the second heat exchanger 132 is supported on the guide ribs 113. The guide ribs 113 and the guide channel 112a guide the condensate generated by the second heat exchanger 132, preventing the condensate from flowing freely in the water receiving tray 112 and causing damage to other components.

[0119] Please see Figure 2 and Figure 6 The second heat exchanger 132 is supported on the guide ribs 113. This design has several advantages. First, the condensate produced by the second heat exchanger 132 can flow directly to the guide ribs 113, and then be collected in the guide channel 112a by the guide ribs 113, resulting in good flow guidance. Second, the guide ribs 113 separate the second heat exchanger 132 from the water receiving tray 112, preventing condensate from accumulating at the bottom of the second heat exchanger 132 and causing damage. Third, the guide ribs 113 serve both guiding and supporting functions, which not only improves the stability of the second heat exchanger 132 but also eliminates the need for additional supporting structures, making assembly easier and reducing manufacturing difficulty and production costs.

[0120] In some embodiments, please refer to Figure 6 The water receiving tray 112 has a drain outlet 112b that communicates with the flow guiding channel 112a. There are multiple flow guiding ribs 113, and the height of all flow guiding ribs 113 is higher than the height of the drain outlet 112b.

[0121] The drip tray 112 is inclined towards the wall side facing the guide rib 113. The height of the end of the guide channel 112a away from the drain outlet 112b is higher than the height of the end of the guide channel 112a near the drain outlet 112b. In this way, condensate can flow spontaneously from the higher position of the guide channel 112a to the lower position of the guide channel 112a under the guidance of the guide rib 113, and finally be discharged from the drip tray 112 through the drain outlet 112b, preventing condensate from stagnating in the drip tray 112 for a long time. In addition, users can reduce the number of times they need to open the cover 111 to clean condensate, improving the user experience.

[0122] For example, multiple guide ribs 113 are spaced apart along the second direction, and the drain outlet 112b is located on the first side of the second direction. In this way, condensate can spontaneously flow from the second side of the second direction to the first side of the second direction, wherein the first direction and the second direction intersect, and the first side of the second direction and the second side of the second direction are opposite sides.

[0123] It should be noted that the intersection of the first direction and the second direction can be oblique or perpendicular.

[0124] In one embodiment, the guide rib 113 is generally V-shaped, with a pointed end and an open end opposite to the pointed end. Multiple guide ribs 113 are spaced apart along a second direction to form a guide unit, and multiple guide units are spaced apart along a first direction. The open ends of guide ribs 113 within the same guide unit face the same direction, and the guide ribs 113 of adjacent guide units are staggered. Thus, under the guidance of the guide ribs 113, the flow path of the condensate is approximately S-shaped, resulting in relatively stable flow and preventing splashing onto other components.

[0125] Please see Figures 7 to 11 This application also provides a heat pump water heater 100, including the head assembly 1 and the water tank assembly 2 in any embodiment of this application. The water tank assembly 2 includes a water storage chamber 2a and a circulation pipe 21, and the circulation pipe 21 connects the water storage chamber 2a and the water circuit module 12.

[0126] The water storage chamber 2a is used to store water. The water can flow to the water circuit module 12 through the circulation pipe 21, and after the temperature is regulated by the heat pump module 13, it can flow back to the water storage chamber 2a through the circulation pipe 21.

[0127] Taking the heat pump module 13 heating water as an example, the water storage chamber 2a is connected to an external pipeline. Hot water flowing back into the water storage chamber 2a can flow out through the external pipeline for user use. For example, the outlet of the external pipeline can be located in the kitchen, allowing users to open the pipeline and use hot water to wash food and utensils. Alternatively, the outlet of the external pipeline can be located in the bathroom, allowing users to open the pipeline and use hot water for rinsing, which is convenient and quick.

[0128] Since water tank assembly 2 no longer requires refrigerant pipes and refrigerant-related components, it can use either an existing water tank or a new one. In other words, water tank assembly 2 and compressor assembly 1 can be manufactured and sold separately. Customer factories can purchase compressor assembly 1 without needing to perform secondary production of refrigerant pipes and refrigerant components for water tank assembly 2. Compressor assembly 1 and water tank assembly 2 can be directly installed in the user's home, avoiding additional workload and reducing unnecessary waste during processing.

[0129] The heat pump water heater 100 provided in this application embodiment does not require additional components or secondary processing of the head assembly 1 and water tank assembly 2. This not only reduces assembly steps but also avoids unnecessary waste during secondary processing, thus reducing costs.

[0130] In one embodiment, the water tank assembly 2 includes a tank body 23 and an inner liner 22, with the inner liner 22 disposed within the tank body 23, forming a water storage cavity 2a. The tank body 23 protects the inner liner 22, preventing water leakage caused by collision between the inner liner 22 and external debris. The inner liner 22 typically employs a sealed design to prevent external dust, impurities, or microorganisms from entering the water storage cavity 2a, ensuring water cleanliness. The double-layer structure of the inner liner 22 and the tank body 23 provides better insulation.

[0131] In one embodiment, please refer to Figure 7 and Figure 8 Both the outer shell 11 and the housing 23 are roughly cylindrical, which not only facilitates the assembly of the head assembly 1 and the water tank assembly 2, but also makes the overall appearance of the heat pump water heater 100 more aesthetically pleasing, thereby improving the user experience.

[0132] Box 23 can also be in other shapes, such as hexahedron or prism, etc.

[0133] In some embodiments, the head assembly 1 and the water tank assembly 2 are detachably connected. This allows the head assembly 1 to be mounted on the water tank assembly 2, or the head assembly 1 and water tank assembly 2 to be mounted separately, as needed. Manufacturers do not need to customize production for any type of water tank assembly 2, and users do not need to perform one-to-one matching of the head assembly 1 and water tank assembly 2, thereby improving the applicability of the head assembly 1 and increasing the product's market competitiveness.

[0134] In other embodiments, the head assembly 1 and the water tank assembly 2 may also be non-detachable.

[0135] For example, please refer to Figure 8 The heat pump water heater 100 includes fasteners 3, which pass through the housing 11 and the water tank assembly 2. The fasteners 3 can enhance the connection stability between the head assembly 1 and the water tank assembly 2, ensuring the operational reliability of the heat pump water heater 100.

[0136] Please continue reading. Figure 7 and Figure 8 The head assembly 1 is located on top of the water tank assembly 2, and the fastener 3 can pass through the housing 11 and the water tank assembly 2 in a vertical direction. This facilitates the user's installation and removal of the head assembly 1 and the water tank assembly 2. In addition, the user can easily install and remove the head assembly 1 and the water tank assembly 2 using only a force-applying component that is compatible with the fastener 3.

[0137] Fasteners 3 include, but are not limited to, screws or bolts. Force-applying components include, but are not limited to, wrenches or screwdrivers.

[0138] In one embodiment, there are multiple fasteners 3, which are spaced apart circumferentially, thereby further enhancing the connection stability between the head assembly 1 and the water tank assembly 2.

[0139] It is understood that the head assembly 1 provided in this application embodiment can also be detachably connected to other types of water tank equipment via fasteners 3.

[0140] In some embodiments, there are multiple head unit assemblies 1, and the water circuit modules 12 of multiple head unit assemblies 1 are connected in series or in parallel in the circulation pipeline 21.

[0141] The series configuration means that the circulation pipeline 21 has a single path, and the water circuit modules 12 of multiple head components 1 are sequentially arranged in the circulation pipeline 21.

[0142] Parallel configuration means that the circulation pipe 21 has multiple paths, and each path is equipped with a corresponding water circuit module 12 of the head assembly 1. The water can enter any one or more head assemblies 1 through the circulation pipe 21 for temperature adjustment, and then flow back to the water tank assembly 2 through the circulation pipe 21.

[0143] For example, in usage scenarios with high hot water demand, multiple generator units 1 can be set up to heat the water in a water tank unit 2, thereby improving heating efficiency.

[0144] In other embodiments, multiple water circuit modules 12 of the head assembly 1 are arranged in a mixed series and parallel configuration on the circulation pipe 21. For example, multiple head assemblies 1 may form a series group, and these series groups may be arranged in parallel on the circulation pipe 21. Alternatively, multiple head assemblies 1 may form a parallel group, and these parallel groups may be arranged in series on the circulation pipe 21. The connection method between the water circuit modules 12 of the head assembly 1 and the circulation pipe 21 can be configured according to different requirements; this application does not limit the specific connection method.

[0145] In some embodiments, the head assembly 1 is used to match at least one of a plurality of water tank assemblies 2, wherein the water storage chambers 2a of at least two water tank assemblies 2 have different capacities.

[0146] In other words, the head assembly 1 can be used to match one, two, or three different numbers of water tank assemblies 2. Taking two water tank assemblies 2 as an example, the water storage chambers 2a of the two water tank assemblies 2 have different capacities. Taking three water tank assemblies 2 as an example, the water storage chamber 2a of one water tank assembly 2 can have a different capacity than the water storage chambers 2a of the other two water tank assemblies 2, or the water storage chambers 2a of all three water tank assemblies 2 can have different capacities.

[0147] In this way, the head assembly 1 can be adapted to water tank assemblies 2 of different specifications according to the needs, thereby improving the applicability of the head assembly 1 and increasing the market competitiveness of the product.

[0148] The specific capacity of the water storage chamber 2a is not limited, for example, it can be 50L, 100L, 150L or 300L, etc.

[0149] In some embodiments, please refer to Figure 10 and Figure 11 With a plane perpendicular to the vertical direction as the projection plane, at least a portion of the projections of the head assembly 1 and the water tank assembly 2 do not overlap.

[0150] The fact that the projections of the head assembly 1 and the water tank assembly 2 do not overlap at least partially means that the projections of the head assembly 1 and the water tank assembly 2 do not overlap partially, or that the projections of the head assembly 1 and the water tank assembly 2 do not overlap completely.

[0151] In other words, the head assembly 1 and the water tank assembly 2 are misaligned. For an example, please refer to [link to example]. Figure 10 When the water tank assembly 2 is located in a confined space, such as inside a cabinet where the vertical space is limited, the heat pump assembly 1 can be placed around the water tank assembly 2. The heat pump assembly 1 does not occupy the vertical space of the water tank assembly 2, allowing both the heat pump assembly 1 and the water tank assembly 2 to be accommodated in the confined space, making it convenient for users to install the heat pump water heater 100.

[0152] For example, please refer to Figure 11 If there are obstacles both directly above and around the water tank assembly 2, the machine head assembly 1 can be positioned above the water tank assembly 2 and spaced apart from the obstacles. In this way, the machine head assembly 1 and the water tank assembly 2 can be arranged reasonably.

[0153] In this embodiment, since only a circulation pipe 21 needs to be set between the head assembly 1 and the water tank assembly 2, in a small space, only the installation space of the head assembly 1, the water tank assembly 2 and the circulation pipe 21 needs to be reserved, so that the heat pump water heater 100 can be installed in a limited space, thereby making full use of the space and suitable for different installation scenarios.

[0154] In some embodiments, please refer to Figure 3 and Figure 9 The circulation pipeline 21 includes a return water pipe 211 and an outlet water pipe 212. The water circuit module 12 includes a return water connector 121 and an outlet water connector 122. The return water pipe 211 connects the return water connector 121 and the water storage chamber 2a. The outlet water pipe 212 connects the outlet water connector 122 and the water storage chamber 2a. The return water inlet 211a of the return water pipe 211 located in the water storage chamber 2a is higher than the outlet water inlet 212a of the outlet water pipe 212 located in the water storage chamber 2a.

[0155] Specifically, the return water inlet 211a extends into the water storage chamber 2a to connect with the water storage chamber 2a. The outlet water inlet 212a extends into the water storage chamber 2a to connect with the water storage chamber 2a.

[0156] Based on the foregoing, taking the heating of water by the heat pump module 13 as an example, the heating process of the water is as follows: the low-temperature water in the water storage chamber 2a first enters the water circuit module 12 through the water outlet pipe 212 and the water outlet connector 122, and then flows into the first heat exchanger 131 to exchange heat with the refrigerant. The low-temperature water is heated into high-temperature water, and the high-temperature water then flows through the return water connector 121 and the return water pipe 211 in sequence, and finally flows back into the water storage chamber 2a. The head assembly 1 completes the heating of the water and realizes the transportation of the water between the head assembly 1 and the water tank assembly 2 through the water circuit module 12.

[0157] Please see Figure 9 The return water inlet 211a and the outlet 212a are spaced vertically. It is understood that the density of the heated high-temperature water is greater than the density of the original low-temperature water in the storage chamber. Therefore, the high-temperature water is usually located in the upper part of the storage chamber 2a, and the low-temperature water is usually located in the lower part. Thus, by placing the return water inlet 211a above the outlet 212a, the characteristics of water at different temperatures are utilized, which not only improves the heating efficiency of the water but also prevents cross-flow between water at different temperatures, thus avoiding affecting the heating effect of the heat pump water heater 100.

[0158] In one embodiment, the return water pipe 211 and the return water connector 121 are threaded together, which can enhance the structural stability of the return water pipe 211 and the return water connector 121, and also improve the sealing performance to prevent water leakage.

[0159] In one embodiment, the water outlet pipe 212 and the water outlet connector 122 are threaded together. This can enhance the structural stability of the water outlet pipe 212 and the water outlet connector 122, and also improve the sealing performance to prevent water leakage.

[0160] Based on the foregoing, taking the assembly of the head unit 1 on the water tank assembly 2 as an example, the assembly process of the head unit 1 and the water tank assembly 2 is described as follows: Remove the cover 111 from the water receiving tray 112, exposing the return water connector 121 and the outlet water connector 122. Then place the head unit 1 on the water tank assembly 2, and secure the water receiving tray 112 and the tank body 23 together using fasteners 3. Further, connect the return water pipe 211 and the return water connector 121, and connect the outlet water pipe 212 and the outlet water connector 122. Finally, install the cover 111 onto the water receiving tray 112 to complete the assembly process.

[0161] In one embodiment, the external pipeline is connected to the side wall of the housing 23 and is close to the return water port 211a. This minimizes the outflow of low-temperature water through the external pipeline, ensuring that hot water can flow smoothly through the external pipeline when the user needs it.

[0162] In one embodiment, the water tank assembly 2 includes a baffle plate disposed in the water storage chamber 2a to divide the water storage chamber 2a into a first chamber and a second chamber, with the return water outlet 211a located in the first chamber and the outlet water outlet 212a located in the second chamber.

[0163] In one embodiment, the first chamber is located above the second chamber, and the water outlet pipe 212 is sealed through the baffle plate to enter the second chamber. In another embodiment, the first chamber and the second chamber may also be distributed along a first direction or a second direction.

[0164] For example, the circumferential surface of the baffle plate is sealed to the wall surface of the water storage chamber 2a. Water can not flow between the first chamber and the second chamber. Thus, the cross-flow between the first chamber and the second chamber can be reduced, minimizing the impact on the water temperature.

[0165] In the description of this specification, the references to the terms "one embodiment," "another embodiment," "some embodiments," "other embodiments," and "exemplary" refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0166] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A head assembly, characterized in that, include: The outer shell forms a receiving cavity; Water circuit module, used for transporting water; The heat pump module includes a refrigerant pipeline, a first heat exchanger, and a second heat exchanger. The first heat exchanger and the second heat exchanger are sequentially arranged in the refrigerant pipeline. The first heat exchanger is used to exchange heat with the water in the water circuit module, and the second heat exchanger is used to exchange heat with the airflow. Both the water circuit module and the heat pump module are arranged in the receiving cavity.

2. The head assembly according to claim 1, characterized in that, The first heat exchanger includes a refrigerant channel and a water flow channel. The refrigerant channel is connected to the refrigerant pipeline, and the water flow channel is connected to the water circuit module.

3. The head assembly according to claim 1, characterized in that, The head assembly includes a water pump, which is disposed in the water circuit module and located within the receiving cavity.

4. The head assembly according to claim 3, characterized in that, The head assembly includes a fan module disposed within the receiving cavity. The water circuit module, the water pump, and the first heat exchanger are all located on the same side of the fan module along a first direction, which intersects with the vertical direction.

5. The head assembly according to claim 1, characterized in that, The head assembly includes a fan module with a fan housing. The fan housing forms an air inlet duct, an air outlet duct, and a flow cavity. The flow cavity connects the air inlet duct and the air outlet duct. The second heat exchanger is disposed in the flow cavity.

6. The head assembly according to claim 5, characterized in that, The fan module includes a fan wheel, which is disposed in the air outlet duct. The air inlet duct and the air outlet duct are located on both sides of the second heat exchanger along a first direction, which intersects with the vertical direction.

7. The head assembly according to claim 5, characterized in that, The fan housing includes an air inlet housing and an air outlet housing. The air inlet housing forms the air inlet duct, and the air outlet housing forms the air outlet duct. The air inlet housing and the air outlet housing are connected to jointly define the flow cavity.

8. The head assembly according to claim 1, characterized in that, The outer casing includes a cover and a water tray, with the cover covering one side of the water tray to jointly define the receiving cavity.

9. The head assembly according to claim 8, characterized in that, The outer shell includes guide ribs, the water receiving tray forms a guide channel, the guide ribs are disposed in the guide channel, and the second heat exchanger is supported on the guide ribs.

10. The head assembly according to claim 9, characterized in that, The water receiving tray has a drain outlet that communicates with the flow guiding channel. There are multiple flow guiding ribs, and the height of all the flow guiding ribs is higher than the height of the drain outlet.

11. A heat pump water heater, characterized in that, include: The nose assembly as described in any one of claims 1 to 10; A water tank assembly includes a water storage chamber and a circulation pipeline, wherein the circulation pipeline connects the water storage chamber and the water circuit module.

12. The heat pump water heater according to claim 11, characterized in that, The head assembly and the water tank assembly are detachably connected.

13. The heat pump water heater according to claim 11, characterized in that, The machine head assembly comprises multiple components, and the water circuit modules of the multiple machine head assemblies are connected in series or in parallel in the circulation pipeline.

14. The heat pump water heater according to claim 11, characterized in that, The head assembly is used to match at least one of the plurality of water tank assemblies, wherein at least two of the water tank assemblies have different water storage chamber capacities.

15. The heat pump water heater according to claim 11, characterized in that, Using a plane perpendicular to the vertical direction as the projection plane, at least a portion of the projections of the head assembly and the water tank assembly do not overlap.

16. The heat pump water heater according to claim 11, characterized in that, The circulation pipeline includes a return water pipe and an outlet water pipe. The water circuit module includes a return water connector and an outlet water connector. The return water pipe connects the return water connector and the water storage chamber. The outlet water pipe connects the outlet water connector and the water storage chamber. The return water inlet of the return water pipe located in the water storage chamber is higher than the outlet water inlet of the outlet water pipe located in the water storage chamber.

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