Condensation pump with built-in non-contact liquid level sensor

Abstract

The utility model discloses a condensation pump with a built-in non-contact liquid level sensor, which comprises a pump body, a stator assembly, a rotor assembly and a control panel, a rectangular cavity is arranged in the pump body, a rotor chamber is arranged in the rectangular cavity along the axial direction in a protruding manner, and the stator assembly is assembled along the length direction of the rectangular cavity and is matched with the rotor chamber. The control panel comprises a first half area used for installing a liquid level sensor and a second half area used for installing an electronic component, the side face, attached to the pump body, of the control panel in the length direction is vertically installed, and the thickness of the control panel is smaller than the distance between the rotor chamber and the side face in the length direction. The traditional horizontally arranged control panel is changed to be vertically attached to the inner wall, so that the mounting space of the control panel is enlarged, the non-contact liquid level sensor is integrated on the control panel, the utilization rate of the internal space of the pump body is improved, the occupation of the liquid level sensor on the equipment space is reduced, the risk of short circuit is reduced, and the service life of the pump body is prolonged. And the safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to condensing pump technical field especially relates to a condensing pump of built -in non -contact liquid level sensor. BACKGROUND

[0002] Condensing pump is composed of motor, impeller, pump body and pump cover, and the pump body and the pump cover form the impeller chamber containing the rotation of the impeller, and the motor uses permanent magnet synchronous motor, when the condensate water liquid level reaches the liquid level sensor induction area, the liquid level sensor sends out a signal, and the motor will be electrified, and the rotor of the motor drives the impeller to rotate at high speed, and the liquid in the impeller chamber is axially sucked and then discharged axially (the drainage direction includes but is not limited to radial, tangential) by the water pump shell drain pipe.

[0003] In the existing household appliances, the liquid level sensor is mostly installed externally, for example, the float ball type liquid level meter, and the liquid level sensor is located outside the condensing pump and can directly contact the liquid, while the circuit board is horizontally arranged inside the condensing pump and is fixed together with the stator assembly by pouring glue, and this liquid level sensor installation mode will cause the following problems: (1) the condensing pump is connected by plug-in terminals, the stator insert is exposed, the stator is easy to short circuit due to water, at the same time, the control board is installed inside the equipment, the internal water vapor is large, and the components are easy to age and fail, short circuit and other abnormalities in the long-term humid environment; (2) the external liquid level sensor will occupy additional internal space of the equipment; (3) after the stator assembly and the circuit board are stacked and installed, pouring is performed, the thickness of the circuit board occupies a certain space, thus the pouring thickness is reduced, and the sealing property is also reduced.

[0004] Although the prior art also has a non-contact liquid level sensor integrated on the circuit board, the area of the circuit board is increased, the rotor chamber inside the condensing pump needs to occupy a large space, the size of the circuit board cannot be increased by using the existing installation mode, and for example, the condensing pump structure disclosed in patent No. CN202320685512, as can be seen from the drawings, the circuit board has been extended to the side of the rotor chamber, and there is no space for further expansion, therefore, a condensing pump with higher safety and space utilization needs to be designed. UTILITY MODEL CONTENTS

[0005] In order to solve the technical problems of low space utilization and safety of the condensing pump in the prior art, the utility model provides a condensing pump with a built-in non-contact liquid level sensor to solve the above problems.

[0006] The utility model solves the technical problems thereof by adopting the technical scheme of a condensing pump with a built-in non-contact liquid level sensor, which comprises a pump body, a stator assembly, a rotor assembly and a control board, the pump body has a rectangular cavity inside, the rectangular cavity has a rotor chamber protruding axially inside, the stator assembly is assembled along the length direction of the rectangular cavity and cooperates with the rotor chamber.

[0007] The control plate comprises a first half area for mounting a liquid level sensor and a second half area for mounting electronic components, is vertically mounted on one side length direction side of the pump body, and the thickness of the control plate is less than the distance from the rotor chamber to the length direction side.

[0008] In an optional embodiment of the utility model, the inner bottom surface of the pump body is provided with a plurality of clamping blocks arranged close to one side length direction side, and the control plate is vertically clamped between the clamping blocks and the length direction side.

[0009] In an optional embodiment of the utility model, the control plate is glued and fixed with the side surface of the pump body.

[0010] In an optional embodiment of the utility model, the length direction side of the pump body close to the control plate has a blocking block shielding both ends of the control plate.

[0011] In an optional embodiment of the utility model, the stator assembly and the control plate are glued and sealed in the pump body.

[0012] In an optional embodiment of the utility model, the sealing height of the glue is higher than the upper end surface of the control plate and lower than the upper end surface of the pump body.

[0013] In an optional embodiment of the utility model, the stator assembly comprises a stator core, a stator framework and an enameled wire wound on the stator framework, the stator core is in a U-shaped structure, the stator core comprises a rectangular mounting portion and an arc-shaped claw portion matched with the rotor chamber, the outer circumferential surface of the rotor chamber has a protruding limiting portion, the inner bottom surface of the pump body is provided with a positioning column, the positioning column is arranged in close contact with the width direction side of the pump body away from the rotor chamber, the rectangular mounting portion is placed on the positioning column, and the arc-shaped claw portion is placed on the limiting portion, so that the stator core has a space for accommodating the stator framework between the inner bottom surface of the pump body.

[0014] In an optional embodiment of the utility model, a straight arm portion is further arranged between the rectangular mounting portion and the arc-shaped claw portion, and the stator framework is connected to the straight arm portion.

[0015] In an optional embodiment of the utility model, the outer surface of the rotor chamber has an arc-shaped clamping plate matched with the arc-shaped claw portion and a positioning protrusion extending towards the stator framework, the side edge of the positioning protrusion is in close contact with the inner side surface of the two straight arm portions, and the end surface of the positioning protrusion is in abutment with the end surface of the stator framework.

[0016] In an optional embodiment of the utility model, the width direction side of the pump body close to the rotor chamber is connected with the rotor chamber through a connecting plate.

[0017] The utility model discloses the beneficial effect is:

[0018] (1) The utility model discloses a control panel is changed to vertical adhesion inner wall arrangement through the traditional horizontal arrangement, thereby increasing the installation space of control panel, and then the non-contact liquid level sensor is integrated on the control panel, improves the space utilization rate in the pump body, reduces the occupation of liquid level sensor to the equipment space, reduces the short circuit risk simultaneously, and higher safety.

[0019] (2) The utility model discloses the stator assembly and control panel are filled with glue in the pump body, further prevent stator assembly and control board short circuit and other problems.

[0020] (3) The utility model discloses the limiting structure is used to the stator assembly and control board in the pump body and is positioned, and then through the glue filling, need not use bolt or welding and so on fixed, thereby improves the installation efficiency, also avoids the influence of metal connecting piece to the magnetic field intensity. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model is further explained below combining with the drawings and embodiment.

[0022] Figure 1 It is the explosion map of the specific embodiment of the condensing pump of the built-in non-contact liquid level sensor of the utility model;

[0023] Figure 2 It is the glue filling liquid level schematic diagram in the utility model;

[0024] Figure 3 It is the three-dimensional view of the pump body in the utility model;

[0025] Figure 4 It is the plan view of the pump body in the utility model;

[0026] Figure 5 It is the front view of the control board in the utility model;

[0027] Figure 6 It is the three-dimensional view of the stator core in the utility model;

[0028] Figure 7 It is the intermediate cross section schematic diagram of the stator assembly and pump body assembly in the utility model.

[0029] In the diagram, 1. Pump body, 101. Rectangular cavity, 2. Stator assembly, 201. Stator core, 2011. Rectangular mounting part, 2012. Arc-shaped claw part, 2013. Linear arm part, 202. Stator frame, 3. Rotor assembly, 4. Control board, 401. First half zone, 402. Second half zone, 5. Rotor chamber, 6. Liquid level sensor, 7. Electronic components, 8. Clamping block, 9. Stop block, 10. Limiting part, 11. Positioning column, 12. Arc-shaped clamping plate, 13. Positioning protrusion, 14. First position, 15. Second position, 16. Connecting plate, 17. Cover, 18. Pump casing, 19. Blade. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] like Figures 1-5 As shown, a condensate pump with a built-in non-contact liquid level sensor includes a pump body 1, a stator assembly 2, a rotor assembly 3, and a control board 4. The pump body 1 has a rectangular cavity 101 inside, and a rotor chamber 5 protrudes axially from the rectangular cavity 101. That is, the rotor chamber 5 protrudes into the rectangular cavity 101, and the rotor chamber 5 isolates the stator assembly 2 from the rotor assembly 3. The cavity of the rotor chamber 5 faces outward from the rectangular cavity 101 and is not connected to the rectangular cavity 101. The rotor assembly 3 is located inside the rotor chamber 5, and the stator assembly 2 is located in the rectangular cavity 101 outside the rotor chamber 5. The stator assembly 2 has a relatively long dimension, so the stator assembly 2 is usually assembled along the length direction of the rectangular cavity 101 and cooperates with the rotor chamber 5.

[0032] The control board 4 includes a first half-section 401 for mounting the liquid level sensor 6 and a second half-section 402 for mounting the electronic components 7. The control board 4 is vertically mounted against one side of the pump body 1 along its length direction, and the thickness of the control board 4 is less than the distance from the rotor chamber 5 to that side along its length direction.

[0033] The control board 4 used in traditional condensate pumps only includes the second half-section 402 for mounting electronic components 7. Therefore, the control board 4 can be installed above the stator assembly 2 next to the rotor chamber 5. The control board 4 in this invention also includes the first half-section 401 for mounting the liquid level sensor 6. The area of ​​the control board 4 is nearly doubled, making conventional horizontal installation impossible. This invention changes the traditional installation method, modifying the control board 4 from horizontal installation to vertical installation along its length. This increases the installation space along the length of the control board 4, no longer limited by the rotor chamber 5. Figure 4As shown, the installation position of the control panel 4 is located at the upper side in the figure, and the installation length is not limited to the right side of the rotor chamber 5. After placing the liquid level sensor 6 in the pump body 1, the space inside the equipment can also be saved.

[0034] The utility model adopts non -contact liquid level sensor 6, liquid level sensor 6 is located inside pump body 1, and is not contacted with the liquid in the equipment, and the non -contact liquid level sensor 6 and the control panel 4 integrated with non -contact liquid level sensor 6 are not new technologies, and can be directly purchased in the market, for example, the water level control panel on the market can be selected. When the condensate water outside the pump body 1 rises to the program set water level sensing height, the liquid level sensor 6 on the control panel 4 recognizes the water level, sends a signal to the control panel 4, and the host computer receives the signal, so that the condensate pump is powered on, and the condensate pump starts to drain,

[0035] The control panel 4 can be glued and fixed with the side surface of the pump body 1, or can be assembled through a limiting structure and then fixed with the stator assembly 2, and the limiting structure can be as follows: the inner bottom surface of the pump body 1 is provided with a plurality of clamping blocks 8 arranged close to the length direction side surface, and the control panel 4 is vertically clamped between the clamping block 8 and the length direction side surface. Figure 3 and Figure 4 As shown, the clamping block 8 is a columnar structure fixed to the inner bottom surface of the pump body 1, and there are three clamping blocks 8 in total. When installing, the control panel 4 can be directly inserted between the clamping block 8 and the side surface of the pump body 1. In further design, the length direction side surface of the pump body 1 close to the control panel 4 has a stop block 9 shielding both ends of the control panel 4. The stop block 9 is fixed to the side surface of the pump body 1, or can be fixed to the inner bottom surface of the pump body 1 at the same time. The shape of the stop block 9 is the same as that of the clamping block 8. The stop block 9 and the clamping block 8 together surround the control panel 4, so as to prevent the control panel 4 from sliding out to the side.

[0036] The stator assembly 2 usually includes a stator core 201, a stator skeleton 202 and an enameled wire wound on the stator skeleton 202. The stator core 201 has a U-shaped structure, as shown in the figure. The stator core 201 includes a rectangular mounting portion 2011 and an arc-shaped claw portion 2012 matched with the rotor chamber 5. A straight arm portion 2013 is further arranged between the rectangular mounting portion 2011 and the arc-shaped claw portion 2012. The stator skeleton 202 is connected to the straight arm portion 2013. The stator assembly 2 can be fixed in the pump body 1 by welding, bolting, pasting or the like. Thus, it is necessary to process mounting holes on the stator assembly 2. If the connecting member is made of metal, it will also affect the magnetic field distribution. Moreover, the long rectangular cavity 101 is narrow and inconvenient to operate. Therefore, the utility model also pre-assembles the stator assembly 2 by using a limiting structure.

[0037] Since the height of the stator skeleton 202 is greater than the height of the stator core 201, the stator core 201 needs to be lifted up, as shown in the figure. Figure 3As shown, the utility model discloses a protruding limiting portion 10 is arranged on the outer circumferential surface of rotor chamber 5, the inner bottom surface of pump body 1 is provided with locating post 11, locating post 11 is arranged in close contact with the width direction side surface of pump body 1 away from rotor chamber 5, rectangular mounting portion 2011 is placed on locating post 11, arc claw portion 2012 is placed on limiting portion 10, so that the space of stator core 201 and the inner bottom surface of pump body 1 has stator skeleton 202. Locating post 11 and limiting portion 10 are in common to the height of stator core 201 and are limited, and arc claw portion 2012 is surrounded outside rotor chamber 5 to realize plane positioning.

[0038] Because the inner diameter of the two arc claw portions 2012 of the stator core 201 is different, and the rotor chamber 5 is a regular cylindrical structure, in order to realize the accurate positioning of the stator assembly 2 on the horizontal surface, the utility model discloses that the arc-shaped clamping plate 12 matched with the arc claw portion 2012 and the positioning protrusion 13 extending to the direction of the stator skeleton 202 are arranged on the outer surface of the rotor chamber 5, the side edge of the positioning protrusion 13 is in close contact with the inner side surface of the two straight arm portions 2013, and the end surface of the positioning protrusion 13 is in abutment with the end surface of the stator skeleton 202. Figure 7 As shown, a small section of the left side of the two straight arm portions 2013 exceeds the stator skeleton 202, and this part forms a U-shaped matching surface with the stator skeleton 202, and the positioning protrusion 13 is in close contact with the U-shaped matching surface.

[0039] The control board 4 and the stator assembly 2 need to be further fixed after being assembled through the limiting structure, in order to avoid the control board 4 from being damp, the utility model discloses that the stator assembly 2 and the control board 4 are integrally fixed in a glue pouring sealing mode. The glue is usually epoxy resin. After the glue pouring sealing is adopted, the sealing property is better, and problems such as short circuit of the stator and the control board 4 are effectively avoided. The glue pouring sealing area needs to be limited to a certain extent, if the pouring sealing thickness is too low, the sealing property will be reduced, if the glue penetrates into the control board 4, electronic components 7 may be damaged, therefore, the pouring sealing height of the glue is limited as follows: the pouring sealing height of the glue is higher than the upper end surface of the control board 4 and is lower than the upper end surface of the pump body 1. Figure 2 As shown in the first position 14 in the figure, the upper end surface of the control board 4 is also the lowest liquid level surface of the glue, and the second position 15 is the upper end surface of the pump body 1, which is also the highest liquid level surface of the glue. Under the traditional control board 4 assembly mode, the control board 4 must be located above the stator assembly 2 as a whole, so the pouring sealing thickness is limited, and in the utility model, the control board 4 and the stator assembly are installed in different areas, so the control board 4 does not need to be located above the stator assembly 2 as a whole, and therefore, the pouring sealing thickness can be increased.

[0040] In an optional embodiment of this utility model, the side of the pump body 1 near the rotor chamber 5 in the width direction is connected to the rotor chamber 5 by a connecting plate 16, which is used to improve the structural strength of the rotor chamber 5.

[0041] like Figure 1 As shown, after the stator assembly 2 and control board 4 are filled into the pump body 1, they are covered with a cover 17 to seal the rectangular cavity 101. On the open side of the rotor chamber 5, a pump casing 18 with a pump cavity is connected to the pump body 1, and the blades 19 connecting the rotor assembly 3 are located in the pump cavity.

[0042] In the description of this utility model, it should be understood that the terms "length", "width", "thickness", "upper", "vertical", "horizontal", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.

[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A condensate pump with a built-in non-contact liquid level sensor, characterized by: The pump body (1) has a rectangular cavity (101) inside, the rectangular cavity (101) has a rotor chamber (5) protruding in the axial direction, the stator assembly (2) is assembled along the length direction of the rectangular cavity (101) and cooperates with the rotor chamber (5); The control panel (4) includes a first half area (401) for installing a liquid level sensor (6) and a second half area (402) for installing electronic components (7), the control panel (4) is vertically installed on one side of the length direction of the pump body (1), and the thickness of the control panel (4) is less than the distance from the rotor chamber (5) to the length direction side.

2. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 1, characterized in that: The inner bottom surface of the pump body (1) is provided with a plurality of clamping blocks (8) arranged close to the length direction side, and the control panel (4) is vertically clamped between the clamping blocks (8) and the length direction side.

3. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 1, characterized in that: The control panel (4) is glued and fixed with the side surface of the pump body (1).

4. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 2, characterized in that: The length direction side of the pump body (1) close to the control panel (4) has a stop block (9) shielding both ends of the control panel (4).

5. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 1, characterized in that: The stator assembly (2) and the control panel (4) are glued and sealed in the pump body (1).

6. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 5, characterized in that: The glue sealing height is higher than the upper end surface of the control panel (4) and lower than the upper end surface of the pump body (1).

7. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 1, characterized in that: The stator assembly (2) includes a stator core (201), a stator skeleton (202) and an enameled wire wound on the stator skeleton (202), the stator core (201) is in a U-shaped structure, the stator core (201) includes a rectangular mounting portion (2011) and an arc-shaped claw portion (2012) cooperating with the rotor chamber (5), the outer peripheral surface of the rotor chamber (5) has a protruding limiting portion (10), the inner bottom surface of the pump body (1) is provided with a positioning column (11), the positioning column (11) is arranged in close contact with the width direction side of the pump body (1) away from the rotor chamber (5), the rectangular mounting portion (2011) is placed on the positioning column (11), and the arc-shaped claw portion (2012) is placed on the limiting portion (10), so that the stator core (201) has a space accommodating the stator skeleton (202) between the inner bottom surface of the pump body (1).

8. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 7, characterized in that: A straight arm portion (2013) is further arranged between the rectangular mounting portion (2011) and the arc-shaped claw portion (2012), and the stator skeleton (202) is connected to the straight arm portion (2013).

9. The condensate pump with built-in non-contact liquid level sensor (6) according to claim 8, characterized in that: The outer surface of the rotor chamber (5) has an arc-shaped clamping plate (12) cooperating with the arc-shaped claw portion (2012) and a positioning protrusion (13) extending towards the stator skeleton (202), the side edge of the positioning protrusion (13) is in close contact with the inner side surface of the two straight arm portions (2013), and the end surface of the positioning protrusion (13) abuts against the end surface of the stator skeleton (202).

10. Condensate pump with a built-in non-contact liquid level sensor (6) according to any one of claims 1 to 9, characterized in that: The width direction side close to the rotor chamber (5) in the pump body (1) is connected with the rotor chamber (5) through a connecting plate (16).

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