A pump anti-condensate base and pump

Abstract

This utility model discloses a pump base and pump with anti-condensate drainage, belonging to the field of pump units. The pump of this utility model includes a motor base and a control box, with the control box fitted onto one axial end of the motor base. An external interface is provided on the outer side of the control box. An end cover is located on the end of the motor base opposite the control box. One side wall of the end cover does not have a drainage groove, while the remaining side walls all have drainage grooves. These drainage grooves penetrate the thickness direction of the end cover, connecting the inner cavity of the motor base to the outside. The side wall without a drainage groove and the external interface on the control box are located on different sides of the end cover in the radial direction. This utility model can further reduce the risk of water ingress damage to the motor and improve the protection level.

Description

Technical Field

[0001] This utility model relates to the field of pump unit technology, and more specifically, to a pump anti-condensate base and pump. Background Technology

[0002] During pump operation, under certain conditions, condensation may occur inside the motor housing due to the internal water temperature being lower than the ambient temperature. Existing motor housings typically have multiple drainage grooves around the end face to drain this internal condensation and prevent burn-out.

[0003] For example, patent CN219452482U discloses a condensate drain structure for a water pump motor base. Condensate drains are formed around all four sides of the end face. By increasing the depth of the condensate drains and applying a large-angle draft angle to the inner wall of the base, condensate can still be drained even when the horizontal installation angle is offset. Patent CN217849083U discloses an anti-condensate base and pump for a pump. The end face of the base has drainage grooves and several pairs of drainage outlets around all four sides. The drainage outlet groups include staggered inner and outer drainage outlets. The bottom surface of the inner drainage outlet is higher than the bottom surface of the drainage groove, while the bottom surface of the outer drainage outlet is lower than or flush with the bottom surface of the drainage groove. This design not only facilitates condensate drainage but also prevents external water from flowing back into the motor through the drainage outlets, further reducing the damage caused by condensate to the motor.

[0004] Currently, the industry has paid considerable attention to the drainage of condensate inside pump units, and the structural design of condensate drain tanks has varied and the performance has become increasingly sophisticated. However, in practice, some users still report issues such as pump body short circuits and burnouts due to water inlet. After testing and extensive verification, the after-sales team found that the condensate drain tank's drainage function was normal, making it difficult to accurately identify the cause of the burnout, causing many problems for enterprises. They are also committed to further research on the safety performance of pump body drainage. Utility Model Content

[0005] 1. Technical problem to be solved by the utility model

[0006] In view of the fact that the pump body structure in the existing technology can still cause short circuits and burn out due to water ingress, it is proposed to provide a pump anti-condensate base and pump, which can further reduce the damage to the motor caused by water ingress and improve the protection level.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0009] This utility model discloses a pump, including a motor base and a control box. The control box is installed axially at one end of the motor base. An external interface is provided on the outer side of the control box. The end of the motor base opposite to the control box has an end cover. Among the four side walls of the end cover, one side wall does not have a drainage groove, while the other side walls all have drainage grooves. The drainage grooves penetrate through the thickness direction of the end cover, connecting the inner cavity of the motor base to the outside. The side wall without a drainage groove and the external interface on the control box are located on different sides of the radial direction of the end cover.

[0010] Furthermore, the control box has an external cable adapter frame on its outer side, and external interfaces, including power cable interfaces and signal cable interfaces, are located on the external cable adapter frame.

[0011] Furthermore, a protective cap is provided on the end cap corresponding to the position of each drainage groove. The protective cap protrudes outward from the side wall of the end cap and surrounds the outside of the drainage groove. An external drainage channel is formed inside the protective cap so that the water flowing out of the drainage groove can be discharged outward.

[0012] Furthermore, an information identification area is formed on the side wall of the end cap where the drainage channel is not provided.

[0013] Furthermore, multiple sets of stiffening plates are provided on the side wall of the end cap where the drainage groove is not opened. The surfaces of the multiple sets of stiffening plates are flush, thereby forming a support plane on the side wall.

[0014] Furthermore, on the side wall of the end cap where the drainage groove is not provided, multiple sets of micro-holes with a diameter of no more than 1 mm are provided at intervals along the axial direction of the motor base. These micro-holes penetrate the thickness direction of the end cap, and there is no protective cap surrounding the outside of the micro-holes.

[0015] Furthermore, the drainage groove extends 5-8 mm in width along the circumference of the motor base and 3-5 mm in depth along the axial direction of the motor base; or / and, the radial gap between the inner wall of the protective cap and the outer end face of the end cap is not less than 3 mm along the radial extension direction of the motor base.

[0016] This utility model also provides a pump anti-condensate pump base, including a motor base. One end of the motor base is configured to connect to a control box, and the other end of the motor base has an end cover. One side wall of the end cover does not have a drainage groove, while the other side walls all have drainage grooves. The drainage grooves penetrate through the thickness direction of the end cover, connecting the inner cavity of the motor base to the outside. The side wall without a drainage groove is configured to be on different sides of the radial direction of the end cover from the external interface on the control box.

[0017] Furthermore, a protective cap is provided on the end cap corresponding to the position of each drainage groove. The protective cap protrudes outward from the side wall of the end cap and surrounds the outside of the drainage groove. An external drainage channel is formed inside the protective cap so that the water flowing out of the drainage groove can be discharged outward.

[0018] Furthermore, on the side wall of the end cap where the drainage groove is not provided, multiple sets of micro-holes with a diameter of no more than 1 mm are provided at intervals along the axial direction of the motor base. These micro-holes penetrate the thickness direction of the end cap.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0021] (1) The pump of this utility model has an asymmetrical three-sided slotted and one-sided unslotted form at the end of the motor base. The direction of the unslotted surface is 180° opposite to the direction of the external interface on the control box. While ensuring the drainage of condensate, it can provide a mechanism to prevent users from installing the pump body in the wrong direction, forcing the installer to adjust the installation direction. The unslotted surface will not be installed facing down, that is, the external interface on the control box will not be installed facing up, reducing the risk of short circuit and burnout caused by long-term water accumulation at the external interface, and improving the safety of the pump body.

[0022] (2) The pump of this utility model is equipped with a protective cap on the end cover corresponding to each drainage groove. This not only does not affect the normal discharge of condensate, but also protects the drainage groove, preventing foreign objects from entering the drainage groove and causing motor failure or failure to meet the protection level requirements. In addition, the protective cap with the outward protrusion design makes it easy for users to quickly distinguish the location of the groove-less surface during installation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the pump body structure in the embodiment;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure from an upward perspective;

[0025] Figure 3 This is a schematic diagram showing the distribution of the motor mount and control box in the embodiment;

[0026] Figure 4 This is a schematic diagram showing the distribution of drainage grooves on the motor mount in the embodiment.

[0027] Explanation of the labels in the diagram:

[0028] 100. Motor mount; 101. Protective cap; 102. Drainage trough; 103. Rib plate; 110. End cap;

[0029] 200. Control box; 210. Outgoing cable adapter; 211. Power cord interface; 212. Signal line interface. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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 be mechanical connections or electrical connections; they can be 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 distinguishing feature names and not indicating 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.

[0033] The present invention will be further described below with reference to the embodiments.

[0034] Example

[0035] Combination Figures 1-4 As shown, this embodiment provides a pump, including a motor base 100 and a control box 200, wherein the control box 200 is fitted and installed on one axial end of the motor base 100; an external interface is provided on the outer side of the control box 200; specifically, the motor base 100 provided in this embodiment has an end cover 110 at the end opposite to the control box 200, and one side wall of the end cover 110 does not have a drainage groove 102, while the other side walls all have drainage grooves 102. The drainage grooves 102 penetrate through the thickness direction of the end cover 110, communicating the inner cavity of the motor base 100 with the outside world for the purpose of draining condensate; the side wall without the drainage groove 102 and the external interface on the control box 200 are respectively located on different sides of the radial direction of the end cover 110.

[0036] In practice, the pump body requires external power and signal cables. In this embodiment, the control box 200 has a corresponding cable adapter 210 on its outer side. The external interfaces are located on the cable adapter 210, specifically including a power cable interface 211 and a signal cable interface 212, which are used to connect external power and signal cables. It should be noted that the industry generally adopts a symmetrical design for the condensate drain groove, that is, at least one set of drain grooves is opened on each side of the end cover 110 to ensure that any side has the function of condensate drainage. However, in long-term practice, the applicant still receives feedback from some users that the pump body will burn out due to water ingress. The maintenance team has spent a lot of effort to check and verify, and found that the condensate drain groove function is normal. Moreover, this situation is intermittent and the cause of the burnout cannot be accurately identified. The applicant team conducted in-depth research at user sites and discovered that the traditional condensate drain trough with its surrounding layout has become an industry standard, allowing drainage from all sides. Users do not need to consider the installation direction when installing the pump. While this design seems to improve user installation convenience and drainage adequacy, the uncertainty of the installation direction means that when the user installs the cable adapter 210 upwards, i.e., the external interface faces the control box 200, condensate drainage is not affected. However, since the external interface is located in the upper part of the control box, even though it extends horizontally and has a waterproof cover, external liquid can still occasionally cause water ingress, short circuits, and machine burnout if it passes through the external interface for an extended period.

[0037] Based on this discovery, this application optimizes the traditional four-sided drainage design. The drainage groove 102 design is eliminated from the side area opposite the external interface. Taking the rectangular end cap 110 shape in the attached diagram as an example, the motor mount 100 adopts an asymmetrical three-sided slotted design with one side unslotted. The drainage groove 102 design is retained on three of the end cap 110's sides, while the drainage groove 102 on the fourth side is eliminated. The side without the drainage groove 102 and the side where the external interface is located are located on different sides of the end cap 110 in the radial direction. Figure 2 and Figure 3As shown in the diagram, both the control box 200 and the end cover 110 adopt a similar rectangular structure. When the pump body is installed horizontally along the axial direction, that is, when the external interface on the control box 200 faces upward, the upper side and the left and right side walls of the end cover 110 are provided with drainage grooves 102 as grooved surfaces, while the lower side wall of the end cover 110 is not provided with drainage grooves 102 as a grooveless surface. The direction of the external interface and the direction of the grooveless surface are 180° opposite to each other. Thus, a clear structural difference is formed on the four side walls of the end cover 110, providing a mechanism to prevent incorrect installation direction for users. In the industry, the location of the condensate drain groove is always confirmed before installing the pump. The grooveless side does not have a drain groove 102, and installing it downwards will cause condensate to accumulate, forcing the installer to adjust the installation direction. The grooveless side will not be installed downwards; it can be installed upwards or to the sides. Correspondingly, the grooveless side not being downwards means the external interface will not be installed upwards, reducing the risk of short circuits and burnout caused by long-term water accumulation at the external interface. Further preferred, the grooveless side can be installed upwards, in which case the external interface is installed downwards. This does not affect the condensate drainage function of the motor base 100, and through the groundbreaking asymmetrical design of the drain groove 102 (three features and one absence), it provides a physical structural indication of incorrect installation direction. In practice, depending on the processing requirements, the control box 200 and the end cover 110 may also adopt other non-rectangular structural forms. In this case, the grooveless surface of the end cover 110 and the external interface on the control box 200 are still kept in close opposition, so that the corresponding external interface is not arranged facing upwards when the grooveless surface is not facing downwards.

[0038] To further enhance the protection level, a protective cap 101 is preferably provided on the end cap 110 corresponding to each drainage groove 102. The protective cap 101 protrudes outward from the side wall of the end cap 110 and surrounds the outside of the drainage groove 102. An outward drainage channel is formed inside the protective cap 101 so that water flowing out of the drainage groove 102 can be discharged outward. Figure 4 As shown, the drainage grooves 102 are distributed at the tail end of the end cap 110 and extend through the thickness direction in an open arrangement. When condensate is generated inside, it is guided along the inner wall of the motor base 100 to the tail end, and drained outward using the drainage grooves 102. A U-shaped protective cap 101 is set around the outer periphery of the drainage grooves 102, so that the drainage grooves 102 are in a non-open state. This does not affect the normal drainage of condensate, but at the same time, it can protect the drainage grooves 102 and prevent foreign objects from entering the interior of the drainage grooves 102, causing motor failure or failure to meet the protection level requirements. In addition, the convex design of the protective cap 101 further increases the structural visual difference between the grooved surface and the ungrooved surface, making it easier for users to quickly distinguish the ungrooved surface position during installation. In practice, the protective cap 101 can be integrally cast with the motor base 100 and the end cap 110, which is simple to manufacture and does not increase the number of parts.

[0039] In practice, to ensure effective drainage, the drainage groove 102 is preferably 5-8mm wide along the circumference of the motor base 100 and 3-5mm deep along the axial direction of the motor base 100. For the protective cap 101, preferably, the radial gap between the inner wall of the protective cap 101 and the outer end face of the end cover 110 is not less than 3mm along the radial extension direction of the motor base 100 to ensure sufficient drainage clearance. The extension length of the protective cap 101 along the axial direction of the motor base 100 is not less than the extension length of the drainage groove 102 to provide sufficient protection against the entry of foreign objects. Furthermore, in practice, the inner wall of the protective cap 101 can be designed as an inclined wall oriented in the direction of water flow, forming a guide surface to facilitate rapid drainage.

[0040] In practice, since drainage channels 102 and protective caps 101 are not required at the location of the grooveless surface, it is preferable to form an information identification area in this grooveless surface area for marking identification information, indicating installation direction, etc., making full use of space. Furthermore, multiple sets of stiffening plates 103 can also be provided on this grooveless surface, which not only helps to strengthen the structure, but also the surfaces of the multiple sets of stiffening plates 103 are flush, thereby forming a support plane on the side wall, which is convenient for positioning or stabilizing support during installation and use.

[0041] In practice, alternatively, multiple sets of micro-holes with a diameter of no more than 1 mm can be spaced at intervals along the axial direction of the motor base 100 on the side wall of the end cover 110 without the drainage groove 102. These micro-holes penetrate the thickness direction of the end cover 110, and there is no protective cap 101 surrounding the outside of the micro-holes. That is, drainage micro-holes can also be made on the grooveless surface of the end cover 110 for draining condensate, and the micro-hole setting will not affect the structural difference between the grooved and grooveless surfaces. While ensuring error prevention, drainage performance is enhanced. Even if the user still installs it in the wrong direction with the grooveless surface facing down, it still has a certain effect on draining condensate and reducing the risk of short circuit and burnout.

[0042] This embodiment optimizes the drainage groove 102 on the motor mount 100 so that it matches the position of the external interface on the control box 200. This prevents incorrect installation when the motor mount 100 and the control box 200 are installed together, and also guides the user on the installation direction when installing the pump body structure, reducing the risk of water entering the pump body and improving the safety of use.

[0043] 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 pump, comprising a motor base (100) and a control box (200), the control box (200) being fitted and mounted axially at one end of the motor base (100); characterized in that: The control box (200) has an external interface on its outer side; The motor mount (100) has an end cover (110) at the end opposite to the control box (200). One side wall of the end cover (110) does not have a drainage groove (102), while the other side walls all have drainage grooves (102). The drainage grooves (102) penetrate through the thickness direction of the end cover (110) and connect the inner cavity of the motor mount (100) to the outside. The side wall without drainage grooves (102) and the external interface on the control box (200) are located on different sides of the radial direction of the end cover (110).

2. The pump according to claim 1, characterized in that: The control box (200) has an outgoing cable adapter (210) on its outer side. The external interfaces are located on the outgoing cable adapter (210), including a power cable interface (211) and a signal cable interface (212).

3. A pump according to claim 1, characterized in that: A protective cap (101) is provided on the end cap (110) corresponding to the position of each drainage groove (102). The protective cap (101) protrudes outward from the side wall of the end cap (110) and surrounds and covers the outside of the drainage groove (102). An external drainage channel is formed inside the protective cap (101) so that the water flowing out of the drainage groove (102) can be discharged outward.

4. A pump according to claim 1, characterized in that: An information identification area is formed on the side wall of the end cap (110) where the drainage groove (102) is not opened.

5. A pump according to any one of claims 1-4, characterized in that: On the side wall of the end cap (110) where the drainage groove (102) is not provided, there are multiple sets of stiffening plates (103). The surfaces of the multiple sets of stiffening plates (103) are flush, thereby forming a support plane on the side wall.

6. A pump according to claim 3, characterized in that: On the side wall of the end cap (110) where the drainage groove (102) is not provided, a number of micro holes with a diameter of no more than 1 mm are provided at intervals along the axial direction of the motor base (100). The micro holes penetrate the thickness direction of the end cap (110), and there is no protective cap (101) surrounding the outside of the micro holes.

7. A pump according to claim 3, characterized in that: The drainage groove (102) extends 5-8 mm in the circumferential direction of the motor base (100) and extends 3-5 mm in the axial direction of the motor base (100); or / and, the radial gap between the inner wall of the protective cap (101) and the outer end face of the end cap (110) is not less than 3 mm in the radial extension direction of the motor base (100).

8. A pump anti-condensate base, characterized in that: The device includes a motor mount (100), one end of which is configured to be connected to a control box (200). The other end of the motor mount (100) has an end cover (110). One side wall of the end cover (110) does not have a drainage groove (102), while the other side walls all have drainage grooves (102). The drainage grooves (102) penetrate through the thickness direction of the end cover (110) and connect the inner cavity of the motor mount (100) to the outside. The side wall without drainage grooves (102) is configured to be located on different sides of the radial direction of the end cover (110) from the external interface on the control box (200).

9. A pump anti-condensate base according to claim 8, characterized in that: A protective cap (101) is provided on the end cap (110) corresponding to the position of each drainage groove (102). The protective cap (101) protrudes outward from the side wall of the end cap (110) and surrounds and covers the outside of the drainage groove (102). An external drainage channel is formed inside the protective cap (101) so that the water flowing out of the drainage groove (102) can be discharged outward.

10. A pump anti-condensate base according to claim 8, characterized in that: On the side wall of the end cap (110) where the drainage groove (102) is not provided, a number of micro holes with a diameter of no more than 1 mm are provided at intervals along the axial direction of the motor base (100). These micro holes penetrate the thickness direction of the end cap (110).

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