Variable frequency photovoltaic direct-drive heat pump water heater

Abstract

This application relates to the field of heat pump technology, and in particular to a variable frequency photovoltaic direct-drive heat pump water heater. Key features of the technical solution include: a device body with a water outlet at the bottom for condensate to flow downwards; a bracket fixedly mounted on the bottom of the device body for supporting it; a positioning frame mounted on the bracket, the positioning frame having a positioning groove; a water receiving tray movably inserted into the positioning groove and located below the water outlet; and a limiting component movably mounted on the positioning frame. When the water receiving tray is installed in the positioning groove, the limiting component prevents the water receiving tray from detaching from the positioning groove; when the water receiving tray is removed from the positioning groove, the limiting component releases the water receiving tray. This application reduces the difficulty of maintaining and replacing the water receiving tray.

Description

Technical Field

[0001] This application relates to the field of heat pump technology, and in particular to a variable frequency photovoltaic direct drive heat pump water heater. Background Technology

[0002] A heat pump water heater is an energy-saving device that utilizes the reverse Carnot cycle principle to transfer low-grade heat energy from the ambient air to water, thus producing hot water. Compared to traditional electric or gas heating methods, heat pump water heaters have significant advantages such as high energy efficiency, low operating costs, and safety and environmental friendliness. With technological advancements, some heat pump water heaters adopt full DC inverter photovoltaic drive technology. By connecting the heat pump unit to a photovoltaic device, the photovoltaic device can generate electricity to meet the power supply needs of the heat pump unit on sunny days, reducing the electricity cost for hot water production. On cloudy days, when there is insufficient sunlight, the photovoltaic device can provide partial power, with the remainder compensated by the mains power supply to ensure stable operation of the unit. At night, the photovoltaic system does not generate electricity, and the mains power supply is used to supply electricity. The energy efficiency of the heat pump unit is equivalent to that of a high-efficiency full DC inverter heat pump, thus achieving energy-saving heating effects. It has been widely used in residential, commercial, and industrial hot water applications.

[0003] Heat pump units typically have a drip tray at the bottom. This tray actively collects condensate and defrost water generated during system operation and guides them to the drain outlet for easy discharge. This effectively protects internal components from water immersion and corrosion, and prevents water accumulation and freezing that could lead to malfunctions. It is an important component in ensuring the safe, reliable, and efficient operation of the heat pump.

[0004] However, the current design of water collection trays still has shortcomings. For example, in practical applications, water collection trays are usually made of metal or plastic. Under long-term use, metal materials are prone to rust, while plastic materials can become brittle and crack. This can lead to water accumulation on the ground under the heat pump, which may cause building leaks or microbial growth. Therefore, regular maintenance or replacement of water collection trays is necessary. However, there are many difficulties in replacing and maintaining water collection trays, such as limited space and complex installation. Therefore, improvements are needed. Utility Model Content

[0005] To reduce the difficulty of maintaining and replacing the water collection tray, this application provides a variable frequency photovoltaic direct drive heat pump water heater.

[0006] The variable frequency photovoltaic direct-drive heat pump water heater provided in this application adopts the following technical solution:

[0007] A variable frequency photovoltaic direct-drive heat pump water heater includes:

[0008] The device body has a water outlet at the bottom for condensate to flow downwards;

[0009] A bracket is fixedly installed at the bottom of the device body and is used to support the device body;

[0010] A positioning frame is disposed on the bracket, and the positioning frame has a positioning groove;

[0011] The water receiving tray is movably inserted into the positioning groove and located below the water outlet;

[0012] And a limiting component, which is movably disposed in the positioning frame. When the water receiving tray is installed in the positioning groove, the limiting component is used to prevent the water receiving tray from loosening from the positioning groove. When the water receiving tray is removed from the positioning groove, the limiting component is used to loosen the water receiving tray.

[0013] By adopting the above technical solution, when it is necessary to disassemble the water receiving tray, the water receiving tray can be loosened by operating the limiting component. At this time, the water receiving tray can be taken out from the positioning groove, thereby achieving disassembly. When it is necessary to install the water receiving tray, the water receiving tray is inserted into the positioning groove, and then the limiting component is operated. The limiting component limits the water receiving tray, thereby achieving fixation. The operation is convenient and quick, and the difficulty of maintaining and replacing the water receiving tray is reduced.

[0014] Preferably, the positioning frame includes three frame arms connected in sequence, any two adjacent frame arms are perpendicular to each other, and an inlet and outlet are formed on one side. The positioning groove is disposed at the inner edge of the positioning frame and is connected to the inlet and outlet. The water receiving tray is movably inserted into the positioning groove through the inlet and outlet.

[0015] By adopting the above technical solution, three frame arms connected in sequence can form a planar frame mechanism. At this time, by setting the positioning groove in the frame arm, when the water receiving tray is inserted into the positioning groove, the water receiving tray can be positioned in multiple directions, thereby enabling the water receiving tray to achieve a stable positioning effect during installation.

[0016] Preferably, it also includes a threaded fastener, wherein the bracket has at least two threaded holes arranged at intervals along the vertical direction, the positioning frame is slidably disposed on the bracket, the positioning frame is provided with a clearance hole, and the threaded fastener passes through the clearance hole and is threadedly connected to the threaded hole.

[0017] By adopting the above technical solution, the positioning frame can be fixedly installed on the bracket by threaded fasteners to obtain a stable installation. On this basis, by setting multiple threaded holes on the bracket, the positioning frame can be stopped at different heights by threading the threaded fasteners to different threaded holes. This allows the distance between the positioning frame and the water outlet to be changed, so that the water receiving tray can hold higher ice blocks in extremely cold conditions to delay the formation of ice blocks into the device body.

[0018] Preferably, the bracket includes at least four support elements, and the plurality of support elements are evenly arranged around the device body. The positioning frame includes a sliding sleeve, which slides in cooperation with the support elements, and the clearance hole is provided on the sliding sleeve.

[0019] By adopting the above technical solution, multiple sets of sliding sleeves and support elements that slide together can provide balanced sliding support for the positioning frame. On the one hand, this makes the positioning frame smoother when adjusting its height, and on the other hand, it keeps the water receiving tray horizontal to prevent it from tipping over.

[0020] Preferably, the limiting component includes:

[0021] A limiting pin is slidably disposed on the positioning frame;

[0022] The spring is connected to the limiting pin and the positioning frame respectively, and is used to push the limiting pin to extend to one side of the water receiving tray and to abut against the water receiving tray for limiting.

[0023] By adopting the above technical solution, the water tray can be limited and released by pulling the limit pin, which is convenient and quick to operate, and the maintenance and replacement efficiency of the water tray is significantly improved.

[0024] Preferably, a heating element is provided inside the positioning frame, and the heating element is arranged adjacent to the positioning groove.

[0025] By adopting the above technical solution, when it is necessary to remove ice from the water collection tray in extremely cold conditions, the heating element can be activated to heat up the junction between the water collection tray and the positioning frame, thereby enabling the water collection tray to be removed from the positioning frame, thus achieving centralized de-icing. The operation is simple and quick.

[0026] Preferably, a water guide plate is provided on the inner periphery of the water outlet, and the water guide plate is inclined and used to guide the condensate into the water receiving tray.

[0027] By adopting the above technical solution, the water guide can concentrate the condensate adhering to the inner wall of the device into the water receiving tray, thereby preventing the condensate from spilling out.

[0028] Preferably, the bottom wall of the water receiving tray is inclined from one side to the other, and a drain outlet is provided through the lowest point of the bottom wall.

[0029] By adopting the above technical solution, the inclined bottom wall can prevent water from accumulating in the water receiving tray. At the same time, by setting up a drain outlet, the accumulated water can be discharged in time to prevent the growth of microorganisms and bacteria in the water receiving tray.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. By setting positioning slots and limiting components, the water receiving tray can be quickly disassembled and assembled, greatly reducing the difficulty of maintaining and replacing the water receiving tray;

[0032] 2. The height of the water tray is adjustable, allowing for the placement of higher ice blocks in extremely cold conditions to slow the ice blocks from extending into the device body.

[0033] 3. The water guide plate can concentrate the condensate into the drip tray, thus preventing the condensate from spilling out. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a variable frequency photovoltaic direct-drive heat pump water heater in a preferred embodiment of this application.

[0035] Figure 2 This is a structural schematic diagram of the variable frequency photovoltaic direct drive heat pump water heater from another perspective in a preferred embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the structure of the bracket, positioning frame, and water receiving tray in a preferred embodiment of this application.

[0037] Figure 4 This is a schematic diagram of the assembly relationship of the bracket, positioning frame and water receiving tray in a preferred embodiment of this application.

[0038] Figure 5 This is a schematic diagram of the structure of the bracket and the limiting component in a preferred embodiment of this application.

[0039] Figure 6 This is a schematic diagram of the assembly relationship of the threaded fastener, the sliding sleeve, and the bracket in a preferred embodiment of this application.

[0040] Figure 7 This is a schematic diagram of the positioning frame and heating element in a preferred embodiment of this application.

[0041] Figure 8 This is a schematic diagram of the structure of the bracket, positioning frame, water receiving tray and water guide plate in a preferred embodiment of this application.

[0042] Figure 9This is a cross-sectional view of the water receiving tray in a preferred embodiment of this application.

[0043] Explanation of reference numerals in the attached drawings: 1. Device body; 11. Water outlet; 2. Bracket; 21. Threaded hole; 3. Positioning frame; 31. Sliding sleeve; 301. Inlet and outlet; 302. Clearance hole; 4. Water receiving tray; 5. Limiting component; 51. Limiting pin; 511. Connecting protrusion; 52. Spring; 6. Positioning groove; 7. Support frame; 71. Clearance hole; 8. Threaded fastener; 9. Heating element; 10. Water guide plate; 101. Drain outlet. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0045] This application discloses a variable frequency photovoltaic direct-drive heat pump water heater. (See also...) Figure 1 and Figure 2 The heat pump water heater includes a device body 1, a bracket 2, a positioning frame 3, a water receiving tray 4, and a limiting component 5.

[0046] The bottom of the device body 1 has a water outlet 11 for condensate to flow downwards. The bracket 2 is fixedly installed at the bottom of the device body 1 and is used to support the device body 1. The positioning frame 3 is installed on the bracket 2 and has a positioning groove 6. The water receiving tray 4 is movably inserted into the positioning groove 6 and is located below the water outlet 11. The limiting component 5 is movably installed on the positioning frame 3. When the water receiving tray 4 is installed in the positioning groove 6, the limiting component 5 is used to prevent the water receiving tray 4 from loosening from the positioning groove 6. When the water receiving tray 4 is removed from the positioning groove 6, the limiting component 5 is used to loosen the water receiving tray 4.

[0047] The device body 1 mainly includes a shell, a heat pump unit, etc. The heat pump unit is installed inside the shell, and the bottom of the shell is opened to form a water outlet 11. During the operation of the heat pump unit, condensate will be generated and the condensate will flow out from the water outlet 11. The specific principle and structure of the heat pump unit will not be described in detail here.

[0048] Based on this, refer to Figure 3 and Figure 4 The positioning groove 6 is recessed in the positioning frame 3 along the horizontal direction. At this time, the water receiving tray 4 is movably inserted into the positioning groove 6 along the horizontal direction. The horizontally extended positioning groove 6 can provide vertical movement limit for the water receiving tray 4, thereby preventing the water receiving tray 4 from falling off. At this time, the limiting component 5 is located on the horizontal side of the positioning frame 3. The limiting component 5 restricts the water receiving tray 4 from falling off horizontally. With the joint cooperation of the positioning groove 6 and the limiting component 5, the water receiving tray 4 can be stably placed on the positioning frame 3.

[0049] In addition, the bottom surface of the device body 1 is usually rectangular, so the water receiving tray 4 is usually set to a rectangular outline to cover the bottom of the device body 1 as much as possible. When it is necessary to disassemble the water receiving tray 4, it is only necessary to operate the limiting component 5 to separate the water receiving tray 4 from the limiting component 5. At this time, the disassembly of the water receiving tray 4 can be completed by horizontally removing the water receiving tray 4 from the positioning groove 6.

[0050] Based on the above solution, this embodiment can achieve quick disassembly and assembly of the water receiving tray 4 by setting the positioning frame 3 and the limiting component 5. The operation is convenient and quick, and the difficulty of maintaining and replacing the water receiving tray 4 is reduced.

[0051] Continue to refer to Figure 2 and Figure 3 The positioning frame 3 includes three frame arms connected in sequence. Any two adjacent frame arms are perpendicular to each other and form an inlet and outlet 301 on one side. The positioning groove 6 is located at the inner edge of the positioning frame 3 and is connected to the inlet and outlet 301. The water receiving tray 4 is movably inserted into the positioning groove 6 through the inlet and outlet 301.

[0052] Specifically, the frame arms have a long rod-like profile, with the ends of adjacent frame arms fixedly connected to each other. The three frame arms are located on the same plane, with the two frame arms on the sides being parallel to each other, thus forming a planar frame structure. Based on this, the positioning groove 6 consists of two separate segments, each located on one of the two parallel frame arms and recessed from the outside inwards along the inner edge of the frame arm. One end of the positioning groove 6 opens at the end face of the frame arm. The width or length of the water receiving tray 4 is then matched to the distance between the two positioning grooves 6. The opposite sides of the water receiving tray 4 can be inserted into the two positioning grooves 6 respectively, until the water receiving tray 4 abuts against the middle frame arm among the three frame arms. At this point, the water receiving tray 4 is able to achieve vertical movement limitation, and the positioning groove 6 can be placed relatively stably on the positioning frame 3.

[0053] It is understandable that a flange is integrally connected in the circumferential direction of the water receiving tray 4, and the water receiving tray 4 is embedded in the positioning groove 6 by means of the flange.

[0054] Reference Figure 5 To further improve the installation stability of the water receiving tray 4, the limiting component 5 includes a limiting pin 51 and a spring 52. The limiting pin 51 is slidably set on the positioning frame 3, and the spring 52 is connected to the limiting pin 51 and the positioning frame 3 respectively, for pushing the limiting pin 51 to extend to one side of the water receiving tray 4, and for abutting against the water receiving tray 4 for limiting.

[0055] Specifically, the limiting pin 51 is a long rod structure, and a sliding hole is provided through the positioning frame 3. One end of the sliding hole is connected to the positioning groove 6. The limiting pin 51 is located in the sliding hole and slides in cooperation with the inner wall of the sliding hole. The sliding hole can guide the limiting pin 51 to move back and forth. During this process, one end of the limiting pin 51 can reciprocate to extend and retract into the positioning groove 6.

[0056] In addition, the positioning frame 3 also includes a support frame 7, which is fixedly mounted on the frame arm. The support frame 7 is provided with a clearance hole 71. The end of the limiting pin 51 away from the positioning groove 6 passes through the clearance hole 71. At this time, a connecting protrusion 511 is integrally connected to the periphery of the limiting pin 51. The spring 52 is sleeved on the limiting pin 51, and the two ends of the spring 52 abut against the connecting protrusion 511 and the support frame 7 respectively. At this time, the support frame 7 can provide support for the spring 52. The spring 52 provides the limiting pin 51 with the elastic force to insert into the positioning groove 6 through the connecting protrusion 511.

[0057] Understandably, when the spring 52 is in its naturally extended state, the spring 52 can drive the limiting pin 51 to insert into the positioning groove 6. At this time, the limiting pin 51 abuts against the water receiving tray 4 to lock the water receiving tray 4 in the positioning groove 6, making the water receiving tray 4 stable and not easy to fall off. In addition, when it is necessary to disassemble the water receiving tray 4, the limiting pin 51 can be pulled out. At this time, the limiting pin 51 compresses the spring 52 and moves away from the positioning groove 6, thereby opening the inlet and outlet 301. At this time, the water receiving tray 4 can be pulled out of the positioning groove 6, thereby achieving disassembly.

[0058] Based on the above settings, the water tray 4 can be limited and released by pulling the limit pin 51. The operation is convenient and quick, and the maintenance and replacement efficiency of the water tray 4 is significantly improved.

[0059] In practical applications, heat pump water heaters may be installed in some extremely cold areas. In such cold environments, condensate may accumulate in the water tray 4 and eventually form ice. Over time, the ice will grow taller and eventually enter the device body 1, causing the internal components to freeze.

[0060] Based on this, refer to Figure 6 It also includes a threaded fastener 8, and the bracket 2 is provided with at least two threaded holes 21 arranged at intervals along the vertical direction. The positioning frame 3 is slidably disposed on the bracket 2. The positioning frame 3 is provided with a clearance hole 302. The threaded fastener 8 passes through the clearance hole 302 and is threadedly connected to the threaded hole 21.

[0061] Specifically, the threaded fastener 8 is usually a screw element. The clearance hole 302 corresponds to the position of the threaded hole 21. At this time, the threaded fastener 8 can be passed through the clearance hole 302 and threadedly connected to the threaded hole 21. When the threaded fastener 8 is threadedly connected to the threaded hole 21, the positioning frame 3 can be fixed on the bracket 2. And by connecting the threaded fastener 8 to different threaded holes 21, the water receiving tray 4 can be stopped at different heights.

[0062] In one embodiment, when the water receiving tray 4 is located at a height far from the water outlet 11, the water receiving tray 4 is closer to the ground, and there is a large height space between the water receiving tray 4 and the water outlet 11, which allows the water receiving tray 4 to hold higher ice blocks in extremely cold conditions and delays the ice blocks from extending into the device body 1.

[0063] In other embodiments, when the water receiving tray 4 is located near the water outlet 11, the water receiving tray 4 and the positioning frame 3 can seal the water outlet 11, thereby reducing the gap between the water outlet 11 and the water receiving tray 4, improving the sealing performance of the device body 1, reducing the possibility of debris or animals entering the device body 1, and making the structure safer and more reliable.

[0064] Reference Figure 4 The bracket 2 includes at least four support elements, and the multiple support elements are evenly arranged around the device body 1. The positioning frame 3 includes a sliding sleeve 31, which slides with the support elements, and an clearance hole 302 is provided on the sliding sleeve 31.

[0065] Specifically, the support element is a vertical plate structure. The top of the support element is fixedly set at the bottom of the device body 1, and the bottom is used to abut against the ground to provide support. The specific number of support elements can be four, six or eight, etc. By setting multiple support elements, the support force on the device body 1 can be increased. It is understood that the specific number of support elements can be adjusted according to actual needs, and no specific limit is made here.

[0066] In this embodiment, the number of support elements is four as an example, and the four support elements are located at the four corners of the device body 1.

[0067] Based on this, the sliding sleeve 31 is a sleeve structure. The interior of the sliding sleeve 31 is hollow and open at both ends. The outline of the internal opening of the sliding sleeve 31 is adapted to the shape of the support element. The sliding sleeve 31 is sleeved on the outside of the support element, and the inner wall of the sliding sleeve 31 slides and abuts against the support element.

[0068] Furthermore, the sliding sleeve 31 is fixedly disposed on the outer edge of the positioning frame 3, and the number of sliding sleeves 31 is adapted to the support elements. Multiple sliding sleeves 31 are slidably disposed on multiple support elements in a one-to-one correspondence. For example, in this embodiment, the number of sliding sleeves 31 is four, and the four sliding sleeves 31 are slidably sleeved on the four support elements.

[0069] Based on the above configuration, multiple sets of sliding sleeves 31 and support elements that slide together can provide balanced sliding support for the positioning frame 3. On the one hand, this makes the positioning frame 3 smoother when adjusting its height, and on the other hand, it keeps the water receiving tray 4 in a horizontal position to prevent it from tipping over.

[0070] Reference Figure 7 A heating element 9 is provided inside the positioning frame 3, and the heating element 9 is arranged adjacent to the positioning groove 6.

[0071] Specifically, the heating element 9 is an electric heating rod, which is connected to the circuit module inside the device body 1 to obtain electrical energy and thus generate heat. At this time, a mounting hole is provided on the positioning frame 3. The positioning frame 3 is made of a thermally conductive metal material, such as iron or aluminum alloy. The heating element 9 is inserted into the positioning hole and is in contact with the inner wall of the mounting hole. At this time, heat can be transferred to the positioning frame 3 through thermal conduction, thereby raising the temperature of the positioning frame 3.

[0072] When it is necessary to remove ice from the water collection tray in extremely cold conditions, the connection between the water collection tray 4 and the positioning frame 3 may be frosted. At this time, the heating element 9 can be activated to heat up the connection between the water collection tray 4 and the positioning frame 3, so that the water collection tray 4 can be smoothly removed from the positioning frame 3 even in harsh conditions. This makes it easier to remove ice from the water collection tray 4 on the outside of the equipment. The operation is simple and quick.

[0073] Reference Figure 8 A water guide plate 10 is provided on the inner wall of the outlet 11. The water guide plate 10 is inclined and used to guide the condensate into the water receiving tray 4.

[0074] Specifically, the water guide plate 10 is inclined, the top of the water guide plate 10 is fixedly connected to the outer shell of the device body 1, and one side surface of the water guide plate 10 intersects with the inner wall of the outer shell. In addition, the bottom of the water guide plate 10 is inclined towards the location of the water receiving tray 4. At this time, the condensate on the inner wall of the outer shell can flow along the inner wall of the outer shell to one side surface of the water guide plate 10, and be guided by the water guide plate 10 to the top of the water receiving tray 4, thereby preventing the condensate from spilling out.

[0075] Reference Figure 9 To improve the drainage efficiency of the water receiving tray 4, the bottom wall of the water receiving tray 4 is inclined from one side to the other, and a drain outlet 101 is provided through the lowest point of the bottom wall.

[0076] Based on the above configuration, the inclined bottom wall can prevent water from accumulating in the water collection tray 4. At the same time, by setting the drain outlet 101, the condensate can be discharged from the drain outlet 101 in a timely manner to prevent the growth of microorganisms and bacteria in the water collection tray 4.

[0077] The implementation principle of the variable frequency photovoltaic direct drive heat pump water heater in this application embodiment is as follows: When it is necessary to disassemble the water receiving tray 4, the limiting pin 51 is pulled out to make the limiting pin 51 leave the positioning groove 6, thereby loosening the water receiving tray 4. At this time, the water receiving tray 4 can be taken out from the positioning groove 6, thereby realizing disassembly.

[0078] When the water tray 4 needs to be installed, first remove the limiting pin 51 from the positioning groove 6, then insert the water tray 4 into the positioning groove 6, and then release the limiting pin 51. Driven by the spring 52, the limiting pin 51 inserts into the positioning groove 6 and abuts against the water tray 4. The limiting component 5 limits the water tray 4, thereby fixing it. The operation is convenient and quick, and the difficulty of maintaining and replacing the water tray 4 is significantly reduced.

[0079] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A variable frequency photovoltaic direct-drive heat pump water heater, characterized in that, include: The device body (1) has a water outlet (11) at the bottom for allowing condensate to flow downwards; A bracket (2) is fixedly installed at the bottom of the device body (1) and is used to support the device body (1); A positioning frame (3) is disposed on the bracket (2), and the positioning frame (3) has a positioning groove (6); The water receiving tray (4) is movably inserted into the positioning groove (6) and located below the water outlet (11); And a limiting component (5) is movably disposed in the positioning frame (3). When the water receiving tray (4) is installed in the positioning groove (6), the limiting component (5) is used to restrict the water receiving tray (4) from being released from the positioning groove (6). When the water receiving tray (4) is removed from the positioning groove (6), the limiting component (5) is used to release the water receiving tray (4).

2. The variable frequency photovoltaic direct-drive heat pump water heater according to claim 1, characterized in that: The positioning frame (3) includes three frame arms connected in sequence. Any two adjacent frame arms are perpendicular to each other and form an inlet / outlet (301) on one side. The positioning groove (6) is located at the inner edge of the positioning frame (3) and is connected to the inlet / outlet (301). The water receiving tray (4) is movably inserted into the positioning groove (6) through the inlet / outlet (301).

3. The variable frequency photovoltaic direct-drive heat pump water heater according to claim 1 or 2, characterized in that: It also includes a threaded fastener (8), and the bracket (2) is provided with at least two threaded holes (21) arranged at intervals along the vertical direction. The positioning frame (3) is slidably disposed on the bracket (2). The positioning frame (3) is provided with a clearance hole (302). The threaded fastener (8) passes through the clearance hole (302) and is threadedly connected to the threaded hole (21).

4. The variable frequency photovoltaic direct-drive heat pump water heater according to claim 3, characterized in that: The bracket (2) includes at least four support elements, and the multiple support elements are evenly arranged around the device body (1). The positioning frame (3) includes a sliding sleeve (31), which slides with the support elements. The clearance hole (302) is provided on the sliding sleeve (31).

5. The variable frequency photovoltaic direct-drive heat pump water heater according to claim 1, characterized in that: The limiting component (5) includes: The limiting pin (51) is slidably disposed on the positioning frame (3); And a spring (52), which is connected to the limiting pin (51) and the positioning frame (3) respectively, to push the limiting pin (51) to extend to one side of the water receiving tray (4) and to abut against the water receiving tray (4) for limiting.

6. The variable frequency photovoltaic direct-drive heat pump water heater according to claim 1, characterized in that: A heating element (9) is provided inside the positioning frame (3), and the heating element (9) is arranged adjacent to the positioning groove (6).

7. The variable frequency photovoltaic direct-drive heat pump water heater according to claim 1, characterized in that: The water outlet (11) has a water guide plate (10) on its inner periphery. The water guide plate (10) is inclined and used to guide the condensate into the water receiving tray (4).

8. The variable frequency photovoltaic direct-drive heat pump water heater according to claim 1, characterized in that: The bottom wall of the water receiving tray (4) is inclined from one side to the other, and a drain outlet (101) is provided through the lowest position of the bottom wall.

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