Wind deflector and heat pump water heater

Abstract

The utility model belongs to the technical field of heat pump equipment, specifically discloses a wind scooper and heat pump water heater. Wind scooper has the installation cavity and the air guide mouth that set up successively along the air current direction and intercommunication, install the evaporimeter in the installation cavity, the bottom of installation cavity is provided with the liquid collecting groove, is provided with the drain hole in the liquid collecting groove, the liquid collecting groove is configured as the condensed water that the evaporimeter generates is collected. The wind scooper disclosed by the utility model can realize safe collection and discharge of the condensed water generated in the operation process of the evaporimeter through simple structure, avoid increasing the product cost of the heat pump water heater, and improve the operation safety of the heat pump water heater.

Description

Technical Field

[0001] This utility model relates to the field of heat pump equipment technology, and in particular to an air guide cover and a heat pump water heater. Background Technology

[0002] A heat pump water heater is an appliance that uses electricity to drive a compressor. High-pressure liquid refrigerant evaporates into a gaseous state in a finned evaporator after passing through an expansion valve, absorbing a large amount of heat energy from the air in the air duct to heat low-temperature water. Current technology provides a heat pump water heater where the finned evaporator and fan are positioned above a tray in the water tank, with the finned evaporator and fan located at opposite ends of the air duct to form convective heat exchange. When air flows through the finned evaporator, it cools and produces condensate. This condensate flows along the fin surface under gravity and drips onto the tray. Excessive condensate accumulation can cause disordered flow on the tray, posing a risk of short circuits to electrical components. Current heat pump water heaters have a dedicated drainage channel on the tray. To facilitate drainage, the tray structure often needs to be adjusted, such as tilting the bottom of the tray towards the drainage channel. This results in a complex tray structure, increased cost, and increased difficulty in installing other components. Utility Model Content

[0003] The first technical problem solved by this utility model is to provide a wind guide shroud that can reduce the risk of short circuits in electrical components caused by the disordered flow of condensate generated during evaporator operation, and also reduce structural complexity and product cost.

[0004] The second technical problem solved by this utility model is to provide a heat pump water heater, which has the above-mentioned air guide shroud that can safely collect and discharge condensate generated during the operation of the evaporator through a simple structure, thereby reducing the complexity of the product structure.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A guide hood is provided, the guide hood having an installation cavity and an air outlet that are interconnected and arranged sequentially along the airflow direction. The installation cavity is used to install an evaporator, and a liquid collection tank is provided at the bottom of the installation cavity for collecting condensate generated by the evaporator. The liquid collection tank is provided with a drain hole.

[0007] Compared with the prior art, the air guide hood of this utility model has the following advantages: The air guide hood has interconnected mounting cavities and air inlets arranged sequentially along the airflow direction. The mounting cavity is used to install the evaporator, and a liquid collection tank is provided at the bottom of the mounting cavity. The liquid collection tank has a drain hole and is configured to collect the condensate produced by the evaporator. The condensate flows to the liquid collection tank on the surface of the evaporator due to gravity, eliminating the need for other guiding components and simplifying the structure. The condensate entering the liquid collection tank enters an external drain pipe through the drain hole and is discharged to the outside. The collection function of the liquid collection tank prevents condensate from dripping and flowing randomly, reducing the risk of short circuits caused by condensate flowing to other electrical components. Furthermore, the condensate in the liquid collection tank can be discharged through the external drain pipe, eliminating the need for a dedicated tray, simplifying the tray structure, reducing costs, and facilitating the installation of other components.

[0008] In one embodiment, the drain hole is located at one end of the liquid collection tank; and / or,

[0009] The bottom of the liquid collection tank is inclined along its length to form a first end and a second end, the first end being higher than the second end, and the drain hole is located at the second end.

[0010] In one embodiment, the outlet end of the drain hole is provided with a drain nozzle extending toward the outside of the air guide shroud, the drain nozzle being detachably connected to an external drain pipe.

[0011] In one embodiment, a mounting groove is provided circumferentially inside the mounting cavity, and one side of the mounting groove penetrates the wall of the air guide shroud to form a mounting opening; the mounting groove is used to install the evaporator.

[0012] In one embodiment, the bottom of the mounting groove located at the bottom of the mounting cavity is recessed downward to form the liquid collection groove.

[0013] The second technical problem mentioned above is solved by the following technical solution:

[0014] A heat pump water heater is provided, including an air guide shroud as described in any of the above embodiments. The heat pump water heater further includes a tray, an evaporator, and a fan assembly. The air guide shroud is placed on the tray, and the evaporator is installed in the mounting cavity of the air guide shroud.

[0015] Compared with the prior art, the heat pump water heater of this utility model has the following advantages: the air guide shroud in any of the above embodiments of the heat pump water heater can collect the condensate generated by the evaporator through the liquid collection tank on the air guide shroud, and discharge it to the outside through the drain hole into the external drain pipe. The condensate is safely collected and discharged through a relatively simple structure, avoiding increasing the structural complexity and product cost of the heat pump water heater, and improving the operational safety of the heat pump water heater.

[0016] In one embodiment, the tray has a water guide hole, and the drain hole is connected to the water guide hole.

[0017] In one embodiment, the evaporator includes a finned heat exchange section, and the projected length of the liquid collection tank in the horizontal plane is greater than the projected length of the finned heat exchange section in the horizontal plane.

[0018] In one embodiment, a mounting groove is provided circumferentially inside the mounting cavity, and one side of the mounting groove penetrates the wall of the air guide shroud to form a mounting opening; the mounting groove is used to mount the evaporator;

[0019] The evaporator includes a finned heat exchange section, multiple straight pipes passing through the finned heat exchange section, and multiple bent pipes for connecting the multiple straight pipes with the liquid distribution pipe to form a circulation loop. The bent pipes are divided into two groups and are located at both ends of the length direction of the finned heat exchange section, with one end of the bent pipe embedded in the mounting groove.

[0020] In one embodiment, along the airflow direction, the evaporator has an air inlet and an air outlet, the air outlet facing the air guide, and the inner walls of the mounting groove along its width direction are respectively sealed to the outer surface edges of the air inlet and the air outlet; and / or,

[0021] One end of the evaporator has a connecting end plate, which is configured to be connected to the air guide shroud when the evaporator is embedded in the mounting groove. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of the air guide shroud connecting the evaporator and the fan assembly provided in this embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the air guide shroud provided in an embodiment of the present utility model;

[0024] Figure 3 A schematic diagram of the structure of a heat pump water heater provided in an embodiment of this utility model;

[0025] Figure 4 A partial structural schematic diagram of a heat pump water heater provided in an embodiment of this utility model;

[0026] Figure 5 A schematic diagram of the structure of the evaporator provided in an embodiment of this utility model;

[0027] Figure 6 A cross-sectional view of the air guide shroud provided in the embodiment of this utility model. Figure 1 ;

[0028] Figure 7 A cross-sectional view of the air guide shroud provided in the embodiment of this utility model. Figure 2 .

[0029] Label Explanation:

[0030] 1. Evaporator; 11. Finned heat exchanger; 12. Bend; 13. Air inlet; 14. Air outlet; 15. Connecting end plate; 16. Straight pipe; 17. Liquid distribution pipe; 2. Fan assembly; 21. Fan; 22. Volute; 3. Air guide shroud; 31. Mounting cavity; 311. Mounting groove; 32. Air guide port; 33. Liquid collection tank; 34. Drain hole; 35. Drain nozzle; 37. Mounting port;

[0031] 100, Tray; 200, Water Tank Housing; 300, Compressor; 400, Expansion Valve; 500, Upper Housing; 501, Air Inlet; 502, Air Outlet. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the description of this application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not 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, they should not be construed as limitations on this application.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] like Figure 1 and Figure 2 As shown, this embodiment of the invention first provides an air guide shroud 3, which connects the evaporator 1 and the fan assembly 2. The operation of the fan assembly 2 generates an airflow that passes through the evaporator 1. The evaporator 1 absorbs a large amount of heat energy from the airflow, and condensation occurs on the outer surface of the evaporator 1 during the heat exchange process. The air guide shroud 3 can be applied to heat pump water heaters or other energy-saving devices using heat pumps, such as heat pump air conditioners.

[0037] The air guide shroud 3 has an interconnected mounting cavity 31 and an air guide port 32 arranged sequentially along the airflow direction. The air guide port 32 is used to connect to the air inlet of the fan assembly 2. The mounting cavity 31 is used to install the evaporator 1. A liquid collection tank 33 is provided at the bottom of the mounting cavity 31, and a drain hole 34 is provided in the liquid collection tank 33. The liquid collection tank 33 is configured to collect the condensate produced by the evaporator 1. Under the action of the fan assembly 2, airflow is generated in the air guide shroud 3. The air guide shroud 3 has a converging effect on the airflow, ensuring that the airflow passes through the evaporator 1 for heat exchange and reducing the heat loss of the evaporator 1. The outlet end of the drain hole 34 is used to connect to an external drain pipe (not shown in the figure). The liquid collection tank 33 is located at the bottom of the mounting cavity 31 to support the evaporator 1. The condensate on the surface of the evaporator 1 flows to the liquid collection tank 33 due to gravity, eliminating the need for other guide components and simplifying the structure. The condensate entering the liquid collection tank 33 enters the external drain pipe through the drain hole 34 to be discharged to the outside. The collection tank 33 prevents condensate from dripping and flowing randomly, reducing the risk of condensate flowing to other electrical components and causing short circuits. Moreover, the condensate in the collection tank 33 can be drained through an external drain pipe, eliminating the need for a dedicated tray. This simplifies the tray structure, reduces costs, and facilitates the installation of other components.

[0038] In one embodiment, the drain hole 34 is located at one end of the collection tank 33, which reduces the risk of being blocked by the evaporator 1 above. It also makes it easier to observe the drain hole 34 during maintenance and prevents the drain hole 34 from being blocked by dirt, which would affect the normal discharge of condensate and cause the collection tank 33 to overflow.

[0039] The bottom of the collection tank 33 is inclined along its length to form a first end and a second end, with the first end higher than the second end. The drain hole 34 is located at the second end. The condensate flows to the drain hole 34 under the guidance of the inclined bottom, improving the reliability of the condensate flow to the drain hole 34 and reducing the amount of condensate accumulated in the collection tank 33.

[0040] The outlet end of the drain hole 34 is provided with a drain nozzle 35 extending outward toward the wind guide shroud 3. The drain nozzle 35 is used for detachable connection to an external drain pipe. The external drain pipe can be set below the wind guide shroud 3, and the drain nozzle 35 can easily form a plug-in connection with the external drain pipe, making disassembly and assembly convenient.

[0041] In one embodiment, a mounting groove 311 is provided circumferentially within the mounting cavity 31. One side of the mounting groove 311 penetrates the wall of the air guide shroud 3, forming a mounting opening 37. The evaporator 1 can be embedded in the mounting groove 311 through the mounting opening 37, facilitating the installation of the evaporator 1 from one side of the air guide shroud 3 through the mounting opening 37, and avoiding installation interference between the evaporator 1 and other structural components around the air guide shroud 3 during the installation process. The mounting groove 311 can constrain the installation position of the evaporator 1. The evaporator 1 can be pushed along the length of the mounting groove 311 through the mounting opening 37 until it is installed in place.

[0042] Optionally, the evaporator 1 is embedded in the mounting groove 311, which can position the evaporator 1 in the entire circumference, thereby improving the positional accuracy of the evaporator 1 installation.

[0043] In one embodiment, the bottom of the mounting groove 311 located at the bottom of the mounting cavity 31 is recessed to form a liquid collection groove 33. The liquid collection groove 33 is directly connected to the mounting groove 311. When the evaporator 1 is installed in the mounting groove 311, the liquid collection groove 33 is located directly below the evaporator 1. The condensate on the surface of the evaporator 1 flows directly to the liquid collection groove 33 due to gravity, without the need for a flow guiding structure.

[0044] The present invention also provides a heat pump water heater, such as... Figure 3 and Figure 4As shown, the heat pump water heater includes an air guide shroud 3 as described in any of the above embodiments. The heat pump water heater also includes a tray 100, an evaporator 1, and a fan assembly 2. The air guide shroud 3 is placed on the tray 100, and the evaporator 1 is installed in the mounting cavity 31 of the air guide shroud 3. The air guide shroud 3 has a mounting cavity 31 and an air inlet 32 ​​that are interconnected and arranged sequentially along the airflow direction. The air inlet 32 ​​is used to connect to the air inlet of the fan assembly 2. The mounting cavity 31 is used to install the evaporator 1. A liquid collection tank 33 is provided at the bottom of the mounting cavity 31, and a drain hole 34 is provided in the liquid collection tank 33. The liquid collection tank 33 is configured to collect the condensate produced by the evaporator 1. Under the action of the fan assembly 2, airflow is generated in the air guide shroud 3. The air guide shroud 3 has a converging effect on the airflow, ensuring that the airflow passes through the evaporator 1 for heat exchange and reducing heat loss from the evaporator 1. The outlet end of the drain hole 34 is used to connect to an external drain pipe (not shown in the figure). The condensate collection tank 33 is located at the bottom of the mounting cavity 31 to support the evaporator 1. Condensate flows from the surface of the evaporator 1 to the collection tank 33 due to gravity, eliminating the need for other guide components and simplifying the structure. Condensate entering the collection tank 33 flows through the drain hole 34 into an external drain pipe for discharge to the outside. The collection function of the collection tank 33 prevents condensate from dripping or flowing randomly, reducing the risk of short circuits caused by condensate flowing to other electrical components. Furthermore, the condensate in the collection tank 33 can be drained through the external drain pipe without adjusting the structure of the tray 100, simplifying its structure, reducing costs, facilitating the installation of other components, and improving the assembly efficiency and operational safety of the heat pump water heater.

[0045] In one embodiment, an airflow channel is formed within the mounting cavity 31 of the air guide shroud 3. The mounting cavity 31 is conical, and the air guide port 32 is located at the smaller diameter end of the cone. One end adapts to the size of the evaporator 1, and the other end adapts to the air inlet size of the fan assembly 2. The conical airflow channel can improve the airflow velocity and increase the heat exchange efficiency of the evaporator 1. The volute 22 of the fan assembly 2 is detachably connected to the outside of the air guide shroud 3, aligning the air inlet with the air guide port 32. The fan 21 is disposed within the volute 22 (see reference). Figure 1 ).

[0046] The tray 100 has a water guide hole, and the drain hole 34 is connected to the water guide hole, thereby achieving connection with an external drain pipe. For a structure where a drain nozzle 35 is provided at the drain hole 34, the drain nozzle 35 can be inserted into the water guide hole to connect to the external drain pipe, or the external drain pipe can be inserted into the water guide hole to connect to the drain nozzle 35. In another embodiment, a water guide nozzle (not shown in the figure) can also be provided at the water guide hole of the tray 100 to replace the drain nozzle 35 of the air guide shroud 3.

[0047] In one embodiment, the heat pump water heater further includes a water tank housing 200, which has a receiving cavity. A water tank is disposed within the receiving cavity. A tray 100 is detachably connected to the water tank housing 200 and closes the receiving cavity. The tray 100 is located above the water tank housing 200, and a wind deflector 3 is disposed above the tray 100. An external drain pipe extends into the receiving cavity to connect to a drain hole 34. The built-in external drain pipe has a more aesthetically pleasing appearance and can extend to the bottom of the water tank housing 200 and exit. The tray 100 does not require a dedicated water receiving trough, simplifying its structure.

[0048] like Figure 5 As shown, the evaporator 1 includes multiple finned heat exchange sections 11 arranged at intervals perpendicular to the airflow direction (only the overall configuration of the multiple finned heat exchange sections 11 is shown in the figure). The length direction of each fin of the finned heat exchange section 11 is perpendicular to the length direction of the liquid collection tank 33. The airflow flows through the gap between two adjacent finned heat exchange sections 11, and condensation is generated on the surface of the finned heat exchange section 11. The length of the liquid collection tank 33 is greater than the arrangement length of the multiple finned heat exchange sections 11, and the projection of the liquid collection tank 33 along the height direction can cover the arrangement length. This ensures that the condensation on the surface of the finned heat exchange sections 11 can flow into the liquid collection tank 33 and will not flow to other positions inside the air guide shroud 3. Figure 6 As shown in the figure, L1 is the length of the arrangement of multiple finned heat exchange sections 11, L2 is the length of the liquid collection tank 33, and L2 > L1.

[0049] like Figure 6 As shown, the drain hole 34 is located at one end of the liquid collection tank 33, and the projection of the drain hole 34 along the height direction is staggered with that of the evaporator 1. In this way, the evaporator 1 will not block the drain hole 34 in the height direction. The drain hole 34 is located on the side of the evaporator 1, which makes it easy to observe the drain hole 34 during maintenance.

[0050] An installation groove 311 is provided inside the mounting cavity 31. One side of the installation groove 311 penetrates the wall of the air guide shroud 3, forming an installation opening 37. The evaporator 1 is embedded in the installation groove 311 through the installation opening 37. The evaporator 1 includes a finned heat exchange section 11, multiple straight tubes 16 passing through the finned heat exchange section 11, and multiple bent tubes 12 for connecting the multiple straight tubes 16 with the liquid distribution pipe 17 to form a circulation loop. The bent tubes 12 are divided into two groups and are located at both ends of the length direction of the finned heat exchange section 11, with one end of the bent tube 12 embedded in the installation groove 311. The installation groove 311 not only constrains the position of the evaporator 1 but also accommodates one end of the bent tube 12.

[0051] In one embodiment, the compressor 300 and expansion valve 400 are also mounted on the tray 100, and are located in front of the air guide shroud 3. The upper housing 500 is detachably connected to the tray 100 and covers the compressor 300, expansion valve 400, and air guide shroud 3. The upper housing 500 has an air guide inlet 501 and an air guide outlet 502. The air guide inlet 501 faces the air inlet end 13 of the evaporator 1, and the air guide outlet 502 faces the air outlet of the fan assembly 2, ensuring smooth airflow. The liquid separator 17 connects the evaporator 1 and the expansion valve 400.

[0052] Along the airflow direction, the evaporator 1 has an air inlet 13 and an air outlet 14, with the air outlet 14 facing the air guide 32. The inner walls of the mounting groove 311 along its width direction are respectively sealed to the outer edges of the air inlet 13 and the outer edges of the air outlet 14, as shown below. Figure 7 As shown, on the one hand, the inner walls of the two sides of the mounting groove 311 constrain the installation position of the evaporator 1, preventing the evaporator 1 from shaking in the mounting groove 311 during operation. On the other hand, the inner walls of the two sides of the mounting groove 311 seal the edge of the evaporator 1, preventing gaps from forming between the inner wall of the groove and the evaporator 1 and causing air leakage, ensuring that all airflow flows through the gaps between the finned heat exchange parts 11, thereby improving the heat exchange efficiency of the evaporator 1.

[0053] One end of the evaporator 1 has a connecting end plate 15. When the evaporator 1 is embedded in the mounting groove 311, the connecting end plate 15 is configured to connect to the air guide shroud 3 and seal part of the gap between the evaporator 1 and the air guide shroud 3. In one embodiment, the connecting end plate 15 is Z-shaped, with one end mounted on the mounting port 37 end face of the air guide shroud 3 by a screw, and the other end located at the end of the finned heat exchange section 11, reducing the possibility of airflow leakage through the mounting port 37.

[0054] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0055] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An air guide shroud, characterized in that, The air guide shroud (3) has an installation cavity (31) and an air guide (32) that are interconnected and arranged sequentially along the airflow direction. The installation cavity (31) is used to install the evaporator (1). A liquid collection tank (33) is provided at the bottom of the installation cavity (31). The liquid collection tank (33) is used to collect the condensate generated by the evaporator (1). A drain hole (34) is provided in the liquid collection tank (33).

2. The air guide shroud according to claim 1, characterized in that, The drain hole (34) is located at one end of the liquid collection tank (33); and / or, The bottom of the liquid collection tank (33) is inclined along the length direction to form a first end and a second end, the first end being higher than the second end, and the drain hole (34) is opened at the second end.

3. The air guide shroud according to claim 1, characterized in that, The outlet end of the drain hole (34) is provided with a drain nozzle (35) extending toward the outside of the air guide shroud (3), and the drain nozzle (35) is used for detachable connection to an external drain pipe.

4. The air guide shroud according to claim 1, characterized in that, An installation groove (311) is provided circumferentially inside the installation cavity (31). One side of the installation groove (311) penetrates the wall of the air guide shroud (3) and forms an installation opening (37). The installation groove (311) is used to install the evaporator (1).

5. The air guide shroud according to claim 4, characterized in that, The bottom of the mounting groove (311) located at the bottom of the mounting cavity (31) is recessed downward to form the liquid collection groove (33).

6. A heat pump water heater, characterized in that, Including the air guide shroud (3) as described in any one of claims 1-3, the heat pump water heater further includes a tray (100), an evaporator (1) and a fan assembly (2), the air guide shroud (3) being placed on the tray (100), and the evaporator (1) being installed in the mounting cavity (31) of the air guide shroud (3).

7. The heat pump water heater according to claim 6, characterized in that, The tray (100) has a water guide hole, and the drain hole (34) is connected to the water guide hole.

8. The heat pump water heater according to claim 6, characterized in that, The evaporator (1) includes a finned heat exchange section (11), and the projected length of the liquid collection tank (33) in the horizontal plane is greater than the projected length of the finned heat exchange section (11) in the horizontal plane.

9. The heat pump water heater according to claim 6, characterized in that, An installation groove (311) is provided circumferentially inside the installation cavity (31), and one side of the installation groove (311) penetrates the wall of the air guide shroud (3) and forms an installation opening (37); the installation groove (311) is used to install the evaporator (1); The evaporator (1) includes a finned heat exchange section (11), multiple straight tubes (16) passing through the finned heat exchange section (11), and multiple bent tubes (12) for connecting the multiple straight tubes (16) with the liquid distribution tube (17) and forming a circulation loop. The bent tubes (12) are divided into two groups and are located at both ends of the length direction of the finned heat exchange section (11), and one end of the bent tube (12) is embedded in the mounting groove (311).

10. The heat pump water heater according to claim 9, characterized in that, Along the airflow direction, the evaporator (1) has an air inlet (13) and an air outlet (14), the air outlet (14) facing the air guide (32), and the inner walls of the mounting groove (311) along the width direction are respectively sealed to the outer side edges of the air inlet (13) and the outer side edges of the air outlet (14); and / or, One end of the evaporator (1) has a connecting end plate (15). When the evaporator (1) is embedded in the mounting groove (311), the connecting end plate (15) is configured to be connected to the air guide shroud (3).

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