Condensation pump convenient to install and efficient in performance

Abstract

The utility model discloses a condensation pump convenient to install and efficient in performance, which comprises a pump body, a pump cover and an impeller, the pump body covers the open end of the pump cover to form an impeller cavity, the impeller enters the impeller cavity through the pump body, the pump body is provided with an installation side plate extending into the pump cover, the inner bottom surface of the pump cover is provided with a boss arranged along the inner wall of the pump cover, and the boss is provided with a boss. The upper surface of the boss is attached to the lower surface of the mounting side plate, and the mounting side plate is in transition fit with the inner wall of the pump cover. And the height of the upper surface of the boss is lower than the lowest height of the impeller. After the boss is additionally arranged in the pump cover, the pump cover is in transition fit with the pump body, the lower surface of the pump body is attached to the upper end face of the boss, and an original fit clearance is removed. And when the pump cover is easily assembled with the pump body, no water flow in the impeller cavity is discharged through the gap, so that the drainage efficiency of the water pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of condensation pumps, and in particular to a condensation pump which is easy to install and has high performance, and is mainly used in household appliances such as dryers and air conditioners. Background Art

[0002] The condensate pump consists of a motor, an impeller, a pump body and a pump cover. The pump body and the pump cover form an impeller cavity that accommodates the impeller. The pump body and the pump cover of existing water pumps on the market mostly use radial clearance fit or interference fit. Among them, the clearance fit is more convenient for the assembly of the pump body and the pump casing. In order to increase the volume of the impeller cavity and ensure the drainage efficiency, the inner bottom surface of the pump cover is often not in contact with the pump body, that is, there is a certain drainage space between the inner bottom surface of the pump cover and the pump body. This causes the clearance fit to leak water during operation and reduce the drainage efficiency. The interference fit will not leak water and has higher drainage efficiency, but the interference fit between the pump body and the pump cover makes it difficult to assemble the two parts.

[0003] Therefore, it is necessary to design a condensate pump that is easy to install and has high performance to meet the needs. Utility Model Content

[0004] In order to solve the technical problems of difficult assembly or low drainage efficiency of condensate pumps in the prior art, the utility model provides a condensate pump that is easy to install and has high performance to solve the above problems.

[0005] The utility model proposes a condensing pump which is easy to install and has high performance, comprising a pump body, a pump cover and an impeller, the pump body cover is combined with the open end of the pump cover to form an impeller cavity, the impeller enters the impeller cavity through the pump body, the pump body has a mounting side plate extending into the interior of the pump cover, the inner bottom surface of the pump cover has a boss arranged along the inner wall of the pump cover, the upper surface of the boss is in contact with the lower surface of the mounting side plate; the upper surface height of the boss is lower than the lowest height of the impeller.

[0006] Furthermore, the mounting side plate (101) is transitionally matched with the inner wall of the pump cover (2).

[0007] Furthermore, the pump cover includes a mounting portion for accommodating the impeller and a drainage portion directly facing the drainage pipe of the condensation pump, the drainage portion is provided with a guide block, and the boss is arranged in the mounting portion.

[0008] Furthermore, the bosses are arranged continuously along an arc, and the first and tail ends of the bosses are located at the connection between the mounting portion and the drainage portion.

[0009] Furthermore, the height of the boss is 1 mm to 1.5 mm.

[0010] Furthermore, the inner diameter of the boss is larger than the inner diameter of the mounting side plate.

[0011] Furthermore, the pump body includes a top plate, the mounting side plate is located at the bottom of the top plate, and the upper edge of the pump cover is in contact with the lower surface of the top plate.

[0012] Furthermore, the inner bottom surface of the pump cover is a plane.

[0013] Furthermore, the guide angle of the impeller chamber is 70°~85°.

[0014] Furthermore, the guide angle of the impeller chamber is 77.5°.

[0015] Furthermore, the pump body also includes an outer baffle plate located at the periphery of the pump cover, and the outer baffle plate is gap-matched with the outer peripheral surface of the pump cover.

[0016] The beneficial effects of the utility model are:

[0017] (1) After the boss is added to the pump cover, the utility model forms a transition fit with the pump body, and the lower surface of the pump body fits with the upper end surface of the boss, eliminating the original fit gap. The pump cover is easy to assemble with the pump body, and no water in the impeller cavity is discharged through the gap, thereby improving the drainage efficiency of the water pump.

[0018] (2) The utility model adjusts the flow guide angle of the impeller chamber to an angle that is more in line with the fluid flow, thereby reducing the fluid loss of the drainage pump during operation and improving the drainage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is an axial cross-sectional view of a specific embodiment of the condensate pump with convenient installation and high performance according to the utility model;

[0021] Figure 2 It is a three-dimensional diagram of the pump cover in the utility model;

[0022] Figure 3 yes Figure 2 A top view of

[0023] Figure 4 yes Figure 1 Enlarged view of the middle impeller cavity;

[0024] Figure 5 It is a schematic diagram of the diversion angle in the utility model.

[0025] In the figure, 1, pump body, 101, mounting side plate, 102, top plate, 103, outer baffle, 2, pump cover, 201, mounting part, 202, drainage part, 3, impeller, 4, motor, 5, impeller cavity, 6, boss, 7, guide block, 8, guide angle, 9, water inlet. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] like Figure 1 As shown, the condensate pump usually includes a pump body 1, a pump cover 2, an impeller 3 and a motor 4. The pump body 1 covers the open end of the pump cover 2 to form an impeller cavity 5. The impeller 3 enters the impeller cavity 5 through the pump body 1. The inner bottom surface of the pump cover 2 is a plane. A water inlet 9 is arranged at the center of the pump cover 2, and a water outlet is located at the side of the impeller cavity 5. After the motor 4 is started, the liquid enters the impeller cavity 5 from the water inlet 9 and is discharged from the water outlet under the action of the centrifugal force generated by the rotation of the impeller 3.

[0028] The pump body 1 has a mounting side plate 101 extending into the pump cover 2. In the traditional structure, considering the strength of the mounting side plate 101 (the longer the mounting side plate 101 is, the easier it is to break), the convenience of installation, and reducing the space occupied by the mounting side plate 101 in the impeller chamber 5, ensuring the drainage efficiency and other factors, there is often a certain gap between the mounting side plate 101 and the inner bottom surface of the pump cover 2, and the liquid easily enters the gap. In terms of assembly method, one method is to install the side plate 101 and the inner wall of the pump cover 2 with a gap fit. At this time, the assembly is relatively easy, but there is obvious water leakage during use, which leads to a decrease in drainage efficiency; another installation method is to install the side plate 101 and the inner wall of the pump cover 2 with an interference fit. This assembly method can effectively avoid water leakage, but there is a problem of difficulty in assembly. The utility model aims to improve the convenience of installation of the condensate pump while also improving the drainage efficiency of the pump, and thus the following improved design is made for the condensate pump.

[0029] like Figure 2-Figure 4 As shown, in the condensing pump described in the utility model, the inner bottom surface of the pump cover 2 has a boss 6 arranged along the inner wall of the pump cover 2, and the upper surface of the boss 6 is in contact with the lower surface of the mounting side plate 101; the upper surface height of the boss 6 is lower than the lowest height of the impeller 3.

[0030] The newly added boss 6 can fill the gap between the original installation side plate 101 and the inner bottom surface of the pump cover 2, thereby preventing liquid from entering. At this time, the installation side plate 101 and the inner wall of the pump cover 2 can be assembled in a transitional fit manner that is easier to install, and the length of the installation side plate 101 extending into the pump cover 2 will not be too long. In the impeller chamber 5, the water flow speed in the space located at the outer periphery of the impeller 3 is faster, and the water flow speed below the impeller 3 is slower. The lower surface of the installation side plate 101 and the upper surface of the boss 6 are required to fit as closely as possible. There will be a small gap during actual installation. Therefore, in order to prevent water from entering the small gap, the height of the boss 6 is synchronously limited, that is, the height of the upper surface of the boss 6 is lower than the lowest height of the impeller 3, so that the small gap is located in the area below the impeller 3 where the water flow speed is slower. No water in the impeller chamber 5 is discharged through the gap, thereby improving the drainage efficiency of the condensate pump. After use verification, the sealing performance of the utility model can reach the standard of traditional interference fit, and the installation is much more convenient and quicker than interference fit.

[0031] The spacing between the conventional pump cover 2 and the mounting side plate 101 is 1 mm to 1.5 mm. Therefore, the height of the boss in the utility model is preferably 1 mm to 1.5 mm. The height of the boss used in the specific test is 1 mm.

[0032] When the impeller chamber 5 of the water pump is working, the water flows along the side plate 101. To prevent the boss 6 from compressing the impeller chamber 5 and affecting the drainage efficiency, the closer the inner diameter of the boss 6 is to the inner diameter of the side plate 101, the better. At the same time, considering the manufacturing tolerance of the parts, it is preferred that the inner diameter of the boss 6 is larger than the inner diameter of the mounting side plate 101, so as to ensure the capacity of the impeller chamber 5 while sealing. In the specific test, the inner diameter of the boss 6 is 36.1 mm, and the inner diameter of the mounting side plate 101 is 36 mm, that is, the inner diameter of the boss 6 is 0.1 mm larger than the inner diameter of the side plate 101.

[0033] Since the part of the pump cover 2 facing the drain pipe does not need to be sealed, this is the drainage position, so the boss 6 may not be provided here. Figure 2 As shown, the pump cover 2 includes a mounting portion 201 for accommodating the impeller 3 and a drainage portion 202 directly facing the drainage pipe of the condensate pump. The drainage portion 202 is provided with a guide block 7, and the boss 6 is arranged in the mounting portion 201. The boss 6 can be provided in multiple circumferential directions, that is, it is discontinuous in the circumferential direction. To ensure the sealing effect, it is preferably continuous in the circumferential direction, that is, the boss 6 is continuously arranged along the arc, and the head and tail ends of the boss 6 are located at the connection between the mounting portion 201 and the drainage portion 202.

[0034] The pump body 1 generally includes a top plate 102, the mounting side plate 101 is located at the bottom of the top plate 102, and the upper edge of the pump cover 2 is in contact with the lower surface of the top plate 102. The pump body 1 generally also includes an outer baffle plate 103 located at the periphery of the pump cover 2, the outer baffle plate 103 is in clearance with the outer peripheral surface of the pump cover 2, and the outer baffle plate 103 shields the contact surface between the upper surface of the pump cover 2 and the lower surface of the top plate 102 to prevent external impurities from entering.

[0035] The drainage efficiency of the condensate pump is also related to the diversion angle 8 of the impeller chamber 5. As shown in the figure, the middle part of the mounting portion 201 is arc-shaped, and the two ends are planes tangent thereto. The two planes tangent to the arc are connected to the inlet of the drainage portion 202. The diversion angle 8 is the angle between the two planes. In the utility model, the diversion angle 8 of the impeller chamber 5 is preferably 70°~85°, so that it is more in line with fluid operation, reduces fluid loss during operation of the condensate pump, and improves drainage efficiency. In specific experiments, the diversion angle 8 of the impeller chamber 5 is 77.5°.

[0036] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0037] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0038] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A condensate pump that is easy to install and has high performance, characterized in that: The pump comprises a pump body (1), a pump cover (2) and an impeller (3), wherein the pump body (1) covers the open end of the pump cover (2) to form an impeller cavity (5), and the impeller (3) enters the impeller cavity (5) through the pump body (1), and the pump body (1) has a mounting side plate (101) extending into the interior of the pump cover (2), and the inner bottom surface of the pump cover (2) has a boss (6) arranged along the inner wall of the pump cover (2), and the upper surface of the boss (6) is in contact with the lower surface of the mounting side plate (101); the upper surface of the boss (6) is lower than the lowest height of the impeller (3).

2. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The mounting side plate (101) is transitionally matched with the inner wall of the pump cover (2).

3. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The pump cover (2) comprises a mounting portion (201) for accommodating an impeller (3) and a drainage portion (202) directly facing a drainage pipe of a condensate pump, the drainage portion (202) being provided with a guide block (7), and the boss (6) being arranged in the mounting portion (201).

4. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The bosses (6) are arranged continuously along an arc, and the first and last ends of the bosses (6) are located at the connection between the mounting portion (201) and the drainage portion (202).

5. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The height of the boss (6) is 1 mm to 1.5 mm.

6. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The inner diameter of the boss (6) is greater than the inner diameter of the mounting side plate (101).

7. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The pump body (1) comprises a top plate (102), the mounting side plate (101) is located at the bottom of the top plate (102), and the upper edge of the pump cover (2) is in contact with the lower surface of the top plate (102).

8. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The inner bottom surface of the pump cover (2) is a plane.

9. The condensate pump with convenient installation and high performance according to claim 1, characterized in that: The flow guide angle (8) of the impeller chamber (5) is 70° to 85°.

10. The condensate pump with convenient installation and high performance according to claim 9, characterized in that: The guide angle (8) of the impeller chamber (5) is 77.5°.

11. The condensate pump with convenient installation and high performance according to claim 7, characterized in that: The pump body (1) further comprises an outer baffle plate (103) located at the periphery of the pump cover (2), and the outer baffle plate (103) is clearance-matched with the outer peripheral surface of the pump cover (2).

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