Water pump frequency converter and backpack type water pump device

Abstract

The utility model discloses a water pump frequency converter and a backpack type water pump device. The water pump frequency converter comprises a radiator, a shell, a power supply driving board, an intelligent power module and an electrolytic capacitor, wherein the shell is fixed on the radiator and forms an accommodating space together with the radiator; the power supply driving board is fixed on the radiator and is positioned in the accommodating space; the intelligent power module and the electrolytic capacitor are fixed on the power supply driving board; the control panel is fixed on one side, far away from the radiator, of the power supply driving board and is arranged at an interval with the power supply driving board; the display panel is fixed on the inner side of the shell and is arranged at an interval with the control panel; the waterproof joint is fixed on the side surface of the shell and penetrates through the shell; the intelligent power module, the electrolytic capacitor and the control panel are respectively and electrically connected with the power supply driving board, and the display board and the waterproof joint are respectively and electrically connected with the control panel. The water pump frequency converter not only can move flexibly, but also can be installed more simply.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump equipment, in particular to a water pump frequency converter and a backpack water pump device. Background Art

[0002] A backpack water pump machine is a device that installs a water pump and engine on a backpack frame. Due to its advantages, it is suitable for various field operations and emergency rescue scenarios, such as forest fire fighting, fire rescue, agricultural irrigation, etc.

[0003] The advantages of backpack water pump special machine are: it adopts lightweight design, light overall weight, easy to carry and operate, the operator can carry it on his back and quickly move to the required position to perform operations, that is, it is light and flexible; it is equipped with a high-performance water pump and engine, which can provide a higher head and flow to meet different work needs. At the same time, the engine adopts energy-saving technology, which not only reduces fuel consumption, but also improves work efficiency and saves energy; the operation is relatively simple, and does not require complicated installation and debugging processes. The operator only needs to perform simple operations according to the instructions to start and use the equipment, that is, it is easy to operate; it can not only be used for pumping and water delivery, but also can be equipped with different spray guns and nozzles to achieve spraying, fire extinguishing and other functions. In addition, it can be connected with other equipment, such as fire hoses and spray guns, etc., which expands its application range, that is, it has versatility.

[0004] The inverter for a backpack water pump is primarily used to control the pump's current and voltage, independent of external power supply influences, maintaining a constant current and voltage to ensure water supply. However, existing pump inverters require a separate electrical box for placement, making them difficult to move and install. Utility Model Content

[0005] The purpose of the utility model is to provide a water pump inverter and a backpack water pump device to solve the problem that the water pump inverter in the prior art needs to be equipped with a separate electrical box for placement, which makes it inflexible to move and troublesome to install.

[0006] In order to solve the above problems, in the first aspect, the utility model provides a water pump inverter, which includes a radiator, a shell fixed to the radiator and jointly enclosed with the radiator to form a receiving space, a power drive board fixed to the radiator and located in the receiving space, an intelligent power module and an electrolytic capacitor fixed to the power drive board, a control board fixed to the side of the power drive board away from the radiator and spaced apart from the power drive board, a display panel fixed to the inner side of the shell and spaced apart from the control board, and a waterproof connector fixed to the side of the shell and passed through the shell, the intelligent power module, the electrolytic capacitor and the control board are electrically connected to the power drive board, respectively, and the display board and the waterproof connector are electrically connected to the control board, respectively.

[0007] Preferably, the shell includes a hollow middle shell covering the periphery of one side of the radiator and an upper cover covering the end of the middle shell away from the radiator, and the radiator, the middle shell and the upper cover are jointly arranged to form the accommodating space; the power drive board and the radiator are spaced apart, the intelligent power module is fixed to the side of the power drive board close to the radiator, the side of the intelligent power module close to the radiator is fitted with the radiator, the electrolytic capacitor is fixed to the side of the power drive board away from the radiator, the display panel is fixed to the upper cover, and the waterproof connector is arranged on the side of the middle shell.

[0008] Preferably, an inwardly recessed and annular extension portion is provided at one end of the middle shell close to the radiator, and the extension portion is fixed to the radiator; the power drive board is fixed to the extension portion through a plurality of connecting columns, and the intelligent power module is located between the extension portions.

[0009] Preferably, a first sealing ring is provided between the middle shell and the radiator, and a second sealing ring is provided between the upper cover and the middle shell.

[0010] Preferably, the surfaces of the middle shell and the upper cover are both provided with a waterproof film.

[0011] Preferably, a side of the radiator away from the power drive board is provided with a plurality of heat dissipation fins that protrude, extend and are arranged at intervals.

[0012] Preferably, the plurality of heat sinks are arranged at equal intervals, and at least two of the heat sinks are provided with a bent portion extending and bending on a side away from the power drive board.

[0013] Preferably, the control board is connected to the power drive board via a plurality of fixing columns.

[0014] Preferably, the display panel includes a plate body fixed to the upper cover and a plurality of display lights arranged on the plate body, and the light of the display lights passes through the upper cover and is exposed outward.

[0015] In a second aspect, the present invention provides a backpack water pump device, which includes the water pump inverter as described above.

[0016] Compared with the existing technology, the water pump inverter of the present invention integrates the power drive board, intelligent power module, electrolytic capacitor, control board and display board in the accommodation space formed by the shell and the radiator, and provides a waterproof connector on the shell, so that it does not need to be equipped with a separate electrical box for placement, and can be directly installed on the motor of the water pump, thereby making the water pump inverter flexible and movable to be suitable for small and dispersed working scenarios, and does not require complicated installation and wiring processes, making the installation of the water pump inverter simpler.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the water pump inverter provided in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure decomposition of the water pump inverter provided in an embodiment of the present utility model;

[0021] Figure 3 It is a structural schematic diagram of the water pump inverter provided in an embodiment of the present utility model with the housing removed.

[0022] Explanation of the accompanying drawings: 1. Radiator; 11. Heat sink; 111. Bending portion; 2. Shell; 21. Middle shell; 211. Extension portion; 22. Upper cover; 3. Power driver board; 31. Connecting column; 4. Intelligent power module; 5. Electrolytic capacitor; 6. Control board; 61. Fixing column; 7. Display board; 71. Board body; 72. Display light; 8. Waterproof connector; 9. First sealing ring; 91. Second sealing ring.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] Please refer to the attached Figures 1 to 3 A water pump inverter according to an embodiment of the present invention is described in detail, which includes a radiator 1, a shell 2 fixed to the radiator 1 and enclosing a receiving space together with the radiator 1, a power drive board 3 fixed to the radiator 1 and located in the receiving space, an intelligent power module 4 (IPM module) and an electrolytic capacitor 5 fixed to the power drive board 3, a control board 6 (CPU control board) fixed to the side of the power drive board 3 away from the radiator 1 and spaced apart from the power drive board 3, a display panel 7 fixed to the inner side of the shell 2 and spaced apart from the control board 6, and a waterproof connector 8 fixed to the side of the shell 2 and passing through the shell 2; the intelligent power module 4, the electrolytic capacitor 5 and the control board 6 are electrically connected to the power drive board 3, respectively, and the display panel 7 and the waterproof connector 8 are electrically connected to the control board 6, respectively.

[0030] Among them, the side of the radiator 1 away from the power drive board 3 is provided with a plurality of heat sinks 11 that protrude, extend and are arranged at intervals. This design can improve the heat dissipation effect of the radiator 1.

[0031] The plurality of heat sinks 11 are arranged at equal intervals. This design can make the heat dissipation space between two adjacent heat sinks 11 the same, thereby further improving the heat dissipation effect of the radiator 1 .

[0032] At least two heat sinks 11 are provided with a bent portion 111 formed by bending and extending on one side away from the power drive board 3. Such a design can facilitate the placement or fixation of the heat sink 1 through the bent portion 111.

[0033] The housing 2 comprises a hollow middle housing 21, which covers the periphery of one side of the radiator 1, and an upper cover 22, which covers the end of the middle housing 21 away from the radiator 1. The radiator 1, the middle housing 21, and the upper cover 22 together form a housing space. The display panel 7 is fixed to the upper cover 22, and the waterproof connector 8 is provided on the side of the middle housing 21. This design facilitates the assembly and disassembly of parts of the housing 2, avoiding the costly replacement of the entire housing 2 if parts of the housing 2 are damaged.

[0034] The middle shell 21 has an inwardly recessed, annular extension 211 at one end near the base plate. This extension 211 is secured to the heat sink 1. The power driver board 3 is secured to the extension 211 via a plurality of connecting posts 31, with the intelligent power module 4 positioned between the extensions 211. This design not only facilitates the placement of the power driver board 3 but also provides mounting space for the intelligent power module 4, allowing it to fit snugly within the heat sink 1.

[0035] A first sealing ring 9 is provided between the middle shell 21 and the radiator 1, and a second sealing ring 91 is provided between the upper cover 22 and the middle shell 21. This design can improve the sealing effect between the middle shell 21 and the radiator 1, and at the same time improve the sealing effect between the upper cover 22 and the middle shell 21.

[0036] The surfaces of the middle shell 21 and the upper cover 22 are both provided with a waterproof film. This design can make the middle shell 21 and the upper cover 22 have a certain degree of waterproof effect.

[0037] The power driver board 3 is spaced apart from the radiator 1, and the intelligent power module 4 is fixed to the side of the power driver board 3 close to the radiator 1. The side of the intelligent power module 4 close to the radiator 1 is arranged in contact with the radiator 1, and the electrolytic capacitor 5 is fixed to the side of the power driver board 3 away from the radiator 1. This design allows the intelligent power module 4 with high heat generation to better fit the radiator 1, thereby improving the heat dissipation effect of the intelligent power module 4.

[0038] The control board 6 is connected to the power drive board 3 via a plurality of fixing columns 61. This design can facilitate the spacing arrangement of the control board 6 and the power drive board 3.

[0039] The display panel 7 includes a plate body 71 fixed to the upper cover 22 and a plurality of display lights 72 provided on the plate body 71. The lights of the display lights 72 are exposed to the outside through the upper cover 22. This design can display the working status of the water pump inverter through the display lights 72 for easy observation by the operator.

[0040] Compared with the prior art, the water pump inverter of this embodiment integrates the power drive board 3, intelligent power module 4, electrolytic capacitor 5, control board 6 and display board 7 in the receiving space formed by the shell 2 and the radiator 1, and provides a waterproof connector 8 on the shell 2, so that it does not need to be equipped with a separate electrical box for placement, and can be directly installed on the motor of the water pump, thereby making the water pump inverter flexible and movable to be suitable for small and dispersed working scenarios, and does not require complicated installation and wiring processes, making the installation of the water pump inverter simpler.

[0041] The present invention further provides an embodiment of a backpack water pump device, which includes the water pump inverter of the above embodiment. Since the backpack water pump device of this embodiment includes the water pump inverter of the above embodiment, it can also achieve the technical effects achieved by the water pump inverter of the above embodiment, and a detailed description thereof is omitted here.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water pump inverter, characterized in that The water pump inverter includes a radiator, a shell fixed to the radiator and enclosing a receiving space together with the radiator, a power drive board fixed to the radiator and located in the receiving space, an intelligent power module and an electrolytic capacitor fixed to the power drive board, a control board fixed to the side of the power drive board away from the radiator and spaced apart from the power drive board, a display panel fixed to the inner side of the shell and spaced apart from the control board, and a waterproof connector fixed to the side of the shell and passing through the shell. The intelligent power module, the electrolytic capacitor and the control board are electrically connected to the power drive board respectively, and the display board and the waterproof connector are electrically connected to the control board respectively.

2. The water pump inverter according to claim 1, characterized in that: The shell includes a hollow middle shell covering the periphery of one side of the radiator and an upper cover covering the end of the middle shell away from the radiator. The radiator, the middle shell and the upper cover are jointly arranged to form the accommodating space; the power drive board is spaced apart from the radiator, the intelligent power module is fixed to the side of the power drive board close to the radiator, the side of the intelligent power module close to the radiator is fitted with the radiator, the electrolytic capacitor is fixed to the side of the power drive board away from the radiator, the display panel is fixed to the upper cover, and the waterproof connector is arranged on the side of the middle shell.

3. The water pump inverter according to claim 2, characterized in that: An inwardly recessed and annular extension portion is provided at one end of the middle shell close to the radiator, and the extension portion is fixed to the radiator; the power drive board is fixed to the extension portion through a plurality of connecting columns, and the intelligent power module is located between the extension portions.

4. The water pump inverter according to claim 2, characterized in that: A first sealing ring is provided between the middle shell and the radiator, and a second sealing ring is provided between the upper cover and the middle shell.

5. The water pump inverter according to claim 2, characterized in that: The surfaces of the middle shell and the upper cover are both provided with waterproof films.

6. The water pump inverter according to claim 2, characterized in that: A plurality of heat dissipation fins are provided on a side of the heat sink away from the power drive board, protruding and extending and spaced apart.

7. The water pump inverter according to claim 6, characterized in that: The plurality of heat sinks are arranged at equal intervals, and at least two of the heat sinks are provided with a bent portion extending and bending on a side away from the power drive board.

8. The water pump inverter according to claim 1, characterized in that: The control board is connected to the power drive board through a plurality of fixing columns.

9. The water pump inverter according to claim 2, characterized in that: The display panel includes a plate body fixed to the upper cover and a plurality of display lights arranged on the plate body, and the light of the display lights passes through the upper cover and is exposed to the outside.

10. A backpack water pump device, characterized in that: The backpack water pump device includes the water pump inverter according to any one of claims 1 to 9.

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