A water pump anti-condensation grounding device for power line throw structure

Abstract

The utility model discloses a water pump anti -condensation water's grounding device for power cord fling line structure belongs to pump unit grounding field. The utility model discloses a pump base and control box, and driver is located in the drive mounting cavity of box seat, and driver is connected with power cord through grounding sheet, still include box cover grounding piece and machine shell grounding piece, and box cover grounding piece one end is connected with the box cover of control box, and the other end is connected with driver, and machine shell grounding piece top end extends to with box cover connection, and bottom end extends to with pump base connection. The utility model discloses the grounding mode of driver, driver connection box cover, box cover connection pump base through power cord ground wire, avoids pump base and driver through grounding terminal direct connection, and leads to motor operation heat transfer to driver through grounding terminal after heating, and forms condensate in control box, influences the normal operation of driver, can effectively guarantee the operation safety and stability.

Description

Technical Field

[0001] This utility model relates to the field of pump unit grounding technology, and more specifically, to a grounding device for preventing condensation in water pumps with a power line drop structure. Background Technology

[0002] Currently, the power connection of pump unit drivers in the industry mainly consists of two types: wire-spinning and adapter-type structures. Adapter-type structures typically use connectors or junction boxes to connect the power line and driver via terminal boxes or waterproof connectors, which is easier to assemble, but increases contact resistance, and multiple adapters can increase cost and potential failure points. Wire-spinning structures, on the other hand, use a direct-connection method, integrating the power lines (L / N / ground) into a harness and directly plugging it into the driver interface. This method helps reduce impedance and fewer adapter steps, but condensation easily forms at the interface between the harness and the control box due to temperature differences. This condensation can easily accumulate and seep into the driver, potentially causing short circuits or corrosion. Furthermore, this direct-connection structure requires complete disassembly of the harness for maintenance, making maintenance difficult. Therefore, users have higher requirements for condensation prevention in pumps with wire-spinning power line structures, making an effective condensation-proof grounding method crucial.

[0003] A search revealed that patent CN222127166U discloses an electronically shielded pump. The pump has a pump driver mounted on its inner casing cover, and a positioning boss for a wiring harness connector is provided on the inner casing cover. A wiring harness connector is mounted on the pump base, with the wiring harness direction parallel to the pump's inlet and outlet directions. The lower part of the wiring harness connector passes through the pump base and the pump driver, and is fixed to the inner casing cover. This design is not a wire-spinning pump and focuses on optimizing and reducing installation steps and improving connection and positioning reliability, without addressing anti-condensation performance. Utility Model Content

[0004] 1. Technical problem to be solved by the utility model

[0005] In response to the industry's high requirements for the anti-condensation performance of water pumps with power cord stranding structures, this utility model proposes to provide a grounding device for preventing condensation in water pumps with power cord stranding structures, so as to optimize the anti-condensation effect of water pumps when grounded through power cord stranding structures and prevent condensation from entering the control box and affecting the operation of the driver.

[0006] 2. Technical Solution

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] This utility model discloses a grounding device for preventing condensation in a water pump with a power cord slip-out structure. It includes a pump base and a control box. The control box has a drive mounting cavity inside, and a driver is located within the drive mounting cavity. The driver is connected to the power cord via a grounding plug to ground the driver. Furthermore, it also includes:

[0009] The cover grounding component has one end connected to the cover of the control box and the other end connected to the driver to achieve grounding of the cover.

[0010] The housing grounding component extends within the control box base, with its top end connecting to the box cover and its bottom end connecting to the pump base, thereby grounding the pump base.

[0011] To further improve the anti-condensation effect, preferably, the box base is provided with a partition plate inside. The partition plate divides the inner cavity of the box base into a drive mounting cavity and a connection cavity that are isolated from each other. The housing grounding component extends from the connection cavity, and the top end of the housing grounding component extends to connect with the box cover, and the bottom end extends to connect with the pump base, so as to realize the grounding of the pump base.

[0012] To further improve the isolation and sealing between the housing grounding component and the drive mounting cavity, a sealing component is further provided around the outer periphery of the housing grounding component. The sealing component covers the top surface of the connecting cavity, so that the top of the connecting cavity is not in communication with the drive mounting cavity.

[0013] Furthermore, a sealing element is provided around the box base and the box cover. The sealing element surrounds the outer periphery of the housing grounding element and covers the top surface of the connecting cavity, so that the top of the connecting cavity is not connected to the drive mounting cavity.

[0014] To further ensure the stability of the installation position of the housing grounding component, a guide groove adapted to the outer wall of the housing grounding component is provided in the connecting cavity. The housing grounding component passes through the guide groove and connects downward to the pump base.

[0015] Furthermore, the grounding component of the housing extends from the cover and its top end contacts and engages with the cover, while its bottom end penetrates the bottom surface of the housing and is fixedly connected to the pump base.

[0016] More preferably, the housing grounding component is a fastening bolt. The top of the fastening bolt presses downwards against the box cover, and the bottom end passes through the connecting cavity and the box seat before being threadedly fastened to the pump base. The fastening bolt achieves grounding coordination while also serving as a connector to effectively secure the control box and pump base.

[0017] To further ensure grounding reliability and installation stability, the housing is divided into at least two connection cavities, each with at least two housing grounding components. The two ends of each housing grounding component are connected to the housing cover and the pump base, respectively.

[0018] Furthermore, the housing is divided into two connecting cavities at opposite ends along its inner diagonal. Two housing grounding components are located at opposite ends of the housing and are connected to the housing cover and pump base, respectively. This diagonal distribution reduces the number of fastening bolts and ensures a stable installation.

[0019] To further reduce condensate generation, the bottom of the housing is provided with support feet, and the pump base is provided with a corresponding support to cooperate with the support feet. The bottom end of the housing grounding part passes through the internal area of ​​the support feet and is fixedly connected to the support.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0022] (1) The grounding structure of this utility model connects the power cord ground wire to the driver, the driver to the box cover, and the box cover to the pump base. This avoids the situation where the pump base and the driver are directly connected through the grounding terminal, which would cause the motor to heat up during operation and transfer the heat to the driver through the grounding terminal, forming condensate in the control box and affecting the normal operation of the driver. This can effectively ensure the safety and stability of operation and meet the anti-condensation performance requirements when the pump body is grounded through the power cord drop structure.

[0023] (2) The grounding structure of this utility model has a partition plate inside the box to isolate the chamber where the driver is located from the chamber where the housing grounding component is located. Even if a small amount of condensate appears in the chamber where the housing grounding component is located, it is isolated outside the drive mounting chamber. The condensate will not enter the drive mounting chamber, thus effectively preventing water from entering and causing adverse effects on the driver.

[0024] (3) The grounding structure of this utility model, the housing grounding component, while achieving the grounding effect, also serves as a fixed connection between the control box and the pump base, realizing an effective fixed connection between the control box and the pump base. The structure is simple and easy to install, and it also helps to fully ensure the reliability of grounding. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the pump body structure in the embodiment;

[0026] Figure 2 This is a cross-sectional view of the pump body in the embodiment;

[0027] Figure 3 This is a schematic diagram of the pump body after the control box cover has been removed in the embodiment.

[0028] Figure 4 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0029] Figure 5 This is a schematic diagram of the control box structure after the cover is removed in the embodiment;

[0030] Figure 6 for Figure 5 A schematic diagram of the control box after the seals have been removed;

[0031] Figure 7 This is a schematic diagram of the bottom view structure of the control box in the embodiment.

[0032] Explanation of the labels in the diagram:

[0033] 110. Box base; 120. Box cover; 130. Driver; 111. Divider plate; 112. Support leg; 113. Seal; 114. Driver mounting cavity; 115. Connecting cavity;

[0034] 200. Pump base; 201. Support unit;

[0035] 300. Grounding component for the chassis. Detailed Implementation

[0036] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0037] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 utility model 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 utility model.

[0038] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. The terms "first," "second," "third," and "fourth" should also be interpreted broadly, merely to distinguish feature names and not to indicate a specific sequential relationship. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The present invention will be further described below with reference to the embodiments.

[0040] Example

[0041] Combination Figures 1-7As shown in the figure, this embodiment provides a grounding device for preventing condensation in a water pump with a power cord stranding structure. It includes a pump base 200 and a control box. The control box base 110 has a drive mounting cavity 114 inside, and the driver 130 is installed in the drive mounting cavity 114. For the power cord stranding structure, the driver 130 is connected to the power cord through a grounding plug. More specifically, the ground wire of the power cord is connected to the driver 130 through a grounding plug to achieve grounding of the driver 130.

[0042] In this embodiment, the control box cover 120 is provided with a cover grounding component. One end of the cover grounding component is connected to the control box cover 120, and the other end is electrically connected to the driver 130 to achieve grounding of the cover 120. More specifically, the control box cover 120 and the pump base 200 are both made of conductive materials such as metal, the base 110 is generally made of plastic, and the cover grounding component is also made of conductive materials such as metal. It is connected to the driver 130 through a wiring harness. In practice, the cover grounding component can be a cover screw. The cover screw is pressed downward and passes through the cover 120, and is connected to the driver 130 through a wiring harness to achieve grounding of the cover 120 using the cover screw. Secondly, a housing grounding component 300 is also provided inside the control box base 110. The top end of the housing grounding component 300 extends to connect with the cover 120, and the bottom end extends to connect with the pump base 200. Similarly, the housing grounding component 300 also uses conductive components such as metal components. The two ends of the housing grounding component 300 are connected to the cover 120 and the pump base 200 respectively, so as to realize the grounding of the pump base 200 by using the housing grounding component 300.

[0043] This embodiment, through the above-described method of connecting the power cord ground wire to the driver 130, the driver 130 to the cover 120, and the cover 120 to the pump base 200, avoids the situation where the pump base 200 and the driver 130 are directly connected through the grounding terminal, which would cause the heat generated during motor operation to be transferred to the driver 130 through the grounding terminal, resulting in condensation in the control box and affecting the normal operation of the driver 130. This effectively ensures operational safety and stability and meets the anti-condensation performance requirements when the pump body is grounded through the power cord drop structure.

[0044] Furthermore, more preferably, the housing 110 has a partition plate 111 inside, which divides the inner cavity of the housing 110 into a mutually isolated drive mounting cavity 114 and a connecting cavity 115. A housing grounding member 300 extends from the connecting cavity 115, with its top end extending to connect with the housing cover 120 and its bottom end extending to connect with the pump base 200. Figure 2As shown, the cavity containing the housing grounding component 300 and the cavity containing the driver 130 are isolated from each other by the partition plate 111 and are not connected. The housing grounding component 300 is in contact with the pump base 200. Even if a small amount of condensate appears in the connection cavity 115 due to heat transfer from the contact, it is isolated from the drive mounting cavity 114, and the condensate will not enter the drive mounting cavity 114, thus effectively avoiding adverse effects on the driver 130. Specifically, the partition plate 111 can adopt various structural forms to form a cavity through which the housing grounding component 300 passes, and this cavity does not communicate with the drive mounting cavity 114. In accordance with the structure of the box base 110, the box cover 120 can adopt a flat plate structure to press against the box base 110 around the perimeter and above the partition plate 111, ensuring that the drive mounting cavity 114 and the connecting cavity 115 are not connected. When the box cover 120 has a certain depth of inner cavity, an upper partition plate can also be set inside the box cover 120 at the position corresponding to the partition plate 111. This upper partition plate is pressed against the partition plate 111 on the box base 110 to achieve the separation of the drive mounting cavity 114 and the connecting cavity 115. Other structural forms can also be adopted.

[0045] To further prevent condensate from entering the drive mounting cavity 114, a sealing element 113 is further provided around the outer periphery of the housing grounding member 300. The sealing element 113 covers the top surface of the connecting cavity 115, preventing the top of the connecting cavity 115 from communicating with the drive mounting cavity 114. By providing the sealing element 113, the connecting cavity 115 can be effectively sealed, preventing water from seeping into the drive mounting cavity 114. More preferably, combined with Figure 5 and Figure 6 As shown, a sealing element 113 is provided around the periphery of the housing base 110 and the housing cover 120. The sealing element 113 surrounds the outer periphery of the housing grounding element 300 and covers the top surface of the connecting cavity 115. The housing grounding element 300 extends downward through the sealing element 113, so that the top of the connecting cavity 115 is not connected to the drive mounting cavity 114, thus preventing condensate from forming in the connecting cavity 115 and seeping into the drive mounting cavity 114. Furthermore, the sealing element 113 effectively ensures the sealing performance of the housing base 110 and the housing cover 120, preventing external air and moisture from entering the control box and forming condensate, thereby improving the waterproof performance of the drive mounting cavity 114.

[0046] Furthermore, in practice, it is preferable that the connecting cavity 115 is provided with a guide groove that matches the outer wall of the housing grounding component 300, and the housing grounding component 300 passes through the guide groove and connects downward to the pump base 200. (For example, in combination...) Figure 6 As shown, a guide sleeve or similar structure can be provided within the connecting cavity 115. The housing grounding component 300 passes through the guide sleeve in a specific orientation, and its two ends are respectively connected to the cover 120 and the pump base 200. This effectively prevents positional movement within the connecting cavity 115, ensuring connection stability and grounding reliability. Specifically, as shown... Figure 6As shown, reinforcing ribs may also be provided between the guide sleeve and the inner wall of the connecting cavity 115.

[0047] To further simplify the structure and facilitate installation, the housing grounding component 300 is preferably used as a fixed connection between the control box and the pump base 200. The housing grounding component 300 extends from the cover 120, with its top end contacting and engaging with the cover 120, and its bottom end penetrating the bottom surface of the base 110 and being fixedly connected to the pump base 200. Specifically, the housing grounding component 300 uses a fastening bolt. The top end of the fastening bolt presses downwards against the cover 120, and the bottom end passes through the connecting cavity 115 and the base 110 before being threadedly fastened to the pump base 200. A stepped recess can be provided on the cover 120 for the fastening bolt to pass downwards and press its top end against the cover 120 to maintain reliable contact. The bottom end of the fastening bolt has a threaded section for fixed connection with the pump base 200. This method utilizes a fastening bolt to simultaneously achieve grounding and fixed connection, resulting in a simplified structure and convenient installation.

[0048] To further ensure grounding reliability, the housing 110 is further divided into at least two connecting cavities 115, each equipped with at least two housing grounding components 300. Each housing grounding component 300 is connected at both ends to the housing cover 120 and the pump base 200, respectively. This means that grounding and fixing functions are achieved using at least two housing grounding components 300. Effective grounding of any one housing grounding component 300 ensures grounding safety and reliability, while multiple housing grounding components 300 effectively guarantee the installation stability of the control box and the pump base 200.

[0049] In practice, preferably, such as Figure 1 and Figure 2 As shown, when the housing 110 has a rectangular structure, there are two connecting cavities 115 at opposite ends along the diagonal of the housing 110. Two housing grounding components 300 are located at opposite ends of the housing 110 and are connected to the housing cover 120 and the pump base 200, respectively. When the housing 110 has a circular structure, the two housing grounding components 300 can be distributed radially at both ends, providing sufficient installation stability.

[0050] To further reduce heat transfer between the control box and the pump base 200 and reduce condensation, the base 110 is further provided with feet 112 around its bottom. The pump base 200 has a corresponding support 201 that mates with the feet 112. The bottom end of the housing grounding component 300 passes through the interior of the feet 112 and is fixedly connected to the support 201. The support 201 has a corresponding threaded hole for threaded fastening with the housing grounding component 300. The control box and pump base 200 are installed together via the feet 112 and the support 201, creating a certain height gap between the bottom wall of the control box and the surface of the pump base 200. This gap forms a ventilation and heat dissipation channel and effectively reduces the contact area between the control box and the pump base 200, thereby reducing heat transfer.

[0051] The grounding structure of this embodiment is suitable for water pumps with a power line drop structure. The housing grounding component 300 serves as both a grounding connector and a fixing connector. The structure is simple and easy to install, and it can effectively reduce the generation of condensate and its transmission into the drive mounting cavity 114, thereby improving the long-term safety of the driver 130.

[0052] The scope of protection of this utility model is defined only by the claims. Thanks to the teachings of this utility model, those skilled in the art will readily recognize that alternative structures to the disclosed structure can be used as feasible alternative implementations, and that the disclosed implementations can be combined to produce new implementations, which also fall within the scope of the appended claims.

Claims

1. A grounding device for preventing condensation in a water pump with a power line drop structure, comprising a pump base (200) and a control box, wherein the control box base (110) has a drive mounting cavity (114) inside, and a driver (130) is located inside the drive mounting cavity (114); the driver (130) is connected to the power line through a grounding plug. Its features are, Also includes: The cover grounding component is connected at one end to the cover (120) of the control box and at the other end to the driver (130). The housing grounding component (300) extends within the housing base (110) of the control box, with the top end of the housing grounding component (300) extending to connect with the housing cover (120) and the bottom end extending to connect with the pump base (200).

2. The grounding device for preventing condensation in a water pump using a power line stranding structure according to claim 1, characterized in that: The housing (110) has a partition plate (111) inside, which divides the inner cavity of the housing (110) into a drive mounting cavity (114) and a connecting cavity (115) that are isolated from each other. The housing grounding component (300) extends from the connecting cavity (115).

3. A grounding device for preventing condensation in a water pump using a power line stranding structure, as described in claim 2, is characterized in that: A sealing element (113) is provided around the outer periphery of the housing grounding part (300). The sealing element (113) covers the top surface of the connecting cavity (115), so that the top of the connecting cavity (115) is not connected to the drive mounting cavity (114).

4. A grounding device for preventing condensation in a water pump using a power line stranding structure according to claim 2, characterized in that: A sealing element (113) is provided around the box base (110) and the box cover (120). The sealing element (113) surrounds the outer periphery of the housing grounding element (300) and covers the top surface of the connecting cavity (115) so that the top of the connecting cavity (115) is not connected to the drive mounting cavity (114).

5. A grounding device for preventing condensation in a water pump using a power line stranding structure according to claim 2, characterized in that: The connecting cavity (115) is provided with a guide groove that is adapted to the outer wall of the housing grounding component (300). The housing grounding component (300) passes through the guide groove and connects downward to the pump base (200).

6. A grounding device for preventing condensation in a water pump using a power line stranding structure according to claim 1, characterized in that: The housing grounding component (300) extends out from the cover (120) and its top end contacts and engages with the cover (120), while its bottom end penetrates the bottom surface of the base (110) and is fixedly connected to the pump base (200).

7. A grounding device for preventing condensation in a water pump with a power line stranding structure according to any one of claims 2-5, characterized in that: The housing grounding component (300) is a fastening bolt. The top of the fastening bolt presses down on the cover (120), and the bottom passes through the connecting cavity (115) and the box seat (110) before being threadedly fastened to the pump base (200).

8. A grounding device for preventing condensation in a water pump using a power line stranding structure according to claim 7, characterized in that: The housing (110) is divided into at least two connecting cavities (115), and at least two housing grounding parts (300) are provided accordingly. The two ends of each housing grounding part (300) are connected to the housing cover (120) and the pump base (200) respectively.

9. A grounding device for preventing condensation in a water pump using a power line stranding structure, as described in claim 7, characterized in that: The inner edge of the box base (110) is divided into two connecting cavities (115) at opposite ends. Two housing grounding parts (300) are located at opposite ends of the box base (110) and are connected to the box cover (120) and the pump base (200) respectively.

10. A grounding device for preventing condensation in a water pump with a power line stranding structure according to any one of claims 1-6, characterized in that: The bottom of the box base (110) is provided with support feet (112) around the bottom. The pump base (200) is provided with a support part (201) that cooperates with the support feet (112). The bottom end of the housing grounding part (300) passes through the internal area of ​​the support feet (112) and is fixedly connected to the support part (201).

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