An air conditioning drain pump with liquid level monitoring function

Abstract

This invention discloses an air conditioner drain pump with liquid level monitoring function, comprising: an upper shell, a lower shell, and a water baffle plate; the upper and lower shells, when closed, form a box for collecting condensate; the water baffle plate is installed inside the box, forming a water storage tank below; the top of the upper shell has an outlet and an inlet; the inlet has a removable filter screen; a float is installed inside the water storage tank; a Hall switch is installed on the circuit board and connected to the pump control. Air conditioner condensate enters the water storage tank through the inlet and the filter screen, which can be easily removed and replaced; then, buoyancy raises the float, and the magnet on the top of the float approaches the circuit board. The Hall switch on the circuit board senses the magnetic force and starts the drain pump to drain the water through the outlet pipe and outlet. When the water level drops after drainage, the Hall switch no longer senses the magnetic force and shuts off the drain pump to stop pumping water. This air conditioner drain pump has a liquid level monitoring function, is highly intelligent, durable, and can prevent water leakage from the water storage tank.

Description

Technical Field

[0001] This invention relates to the field of air conditioning drain pump technology, and in particular to an air conditioning drain pump with liquid level monitoring function. Background Technology

[0002] Every summer, air conditioners become essential for cooling down and are indispensable appliances in every household. However, air conditioners produce a lot of condensation when they are running, especially in the south where the humidity is high, resulting in even more condensation. The usual practice is to drain the condensate directly outdoors through pipes, but this causes water to accumulate on the ground, corrodes walls, and affects the appearance of the city.

[0003] Therefore, air conditioner drain pumps, designed to facilitate drainage of air conditioners, have emerged. They save vertical space in the room and make it easier to install cold water drain pipes, allowing them to drain directly to the sewer or a designated location, making them safe and easy to use.

[0004] However, most air conditioner drain pumps on the market use a ring float and lack a water filter. Over time, impurities in the condensate will adhere to the ring float and the central cylinder. As the float moves up and down, it will get stuck due to excessive resistance, causing the pump to fail to start normally. Water in the storage tank cannot be drained, and the air conditioner continues to generate condensate while working, resulting in water leakage. Summary of the Invention

[0005] The purpose of this invention is to provide an air conditioner drain pump with liquid level monitoring function, which at least partially solves the water leakage problem of the above-mentioned air conditioner drain pump.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This invention provides an air conditioning drain pump with liquid level monitoring function, comprising: an upper outer shell, a lower outer shell, and a water baffle plate; the upper and lower outer shells are closed to form a box for collecting condensate; the water baffle plate is installed in the box, and a water storage tank is formed below the water baffle plate;

[0008] The top of the upper outer shell is provided with a water outlet and a water inlet; wherein the water inlet has a removable filter screen and a connecting pipe passes through the water baffle and is connected to the water storage tank;

[0009] The water storage tank is equipped with a float with a magnet on top;

[0010] A water pump, a water pump inlet pipe, a water pump outlet pipe, and a circuit board are respectively installed on the water-proof plate;

[0011] The water pump is connected to the water pump inlet pipe and the water pump outlet pipe respectively; the water pump inlet pipe extends into the water storage tank through the baffle plate; the water pump outlet pipe passes through the outlet and is connected to the guide pipe.

[0012] A Hall switch is installed on the circuit board, and the Hall switch is connected to the water pump control.

[0013] Furthermore, the bottom of the baffle plate is provided with a limiting structure, and the float floats up and down along the limiting structure when the water level rises and falls.

[0014] Furthermore, the float is a boat-shaped float.

[0015] Furthermore, two long electrode probe sensors are installed on the circuit board, and the long electrode probes extend into the water storage tank through the water-blocking plate; the long electrode probe sensors are connected to the water pump control via a signal conversion circuit.

[0016] Furthermore, a short electrode probe sensor is installed on the circuit board, and the short electrode probe extends into the water storage tank through the water-proof plate; the short electrode probe sensor is connected to the corresponding air conditioning control via a signal conversion circuit.

[0017] Furthermore, when the corresponding air conditioner has an operation control terminal, the short electrode probe sensor of the circuit board is connected to the operation control terminal via a signal conversion circuit to control the air conditioner to be in the off state.

[0018] Furthermore, if the corresponding air conditioner does not have an operation control terminal, the short electrode probe sensor of the circuit board is converted by the signal conversion circuit and then connected to the air conditioner through the AC controller to control the air conditioner to be in the off state.

[0019] Furthermore, the bottom of the water storage tank has a drain outlet, and a rubber plug is installed in the drain outlet.

[0020] Furthermore, the top of the upper housing is provided with a level and / or a waterproof power socket; the waterproof power socket is connected to the circuit board and the water pump respectively.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention provides an air conditioner drain pump with liquid level monitoring. Air conditioner condensate enters the storage tank through a filter screen at the inlet. The filter screen is easily removable and replaceable, filtering impurities and extending its lifespan, while also facilitating cleaning when excessively dirty. The pump is practical and convenient. Buoyancy raises a float, and a magnet on the top of the float approaches a circuit board. A Hall effect switch on the circuit board senses the magnetic force and activates the drain pump to drain the water through an outlet pipe. Once drainage is complete and the water level drops, the Hall effect switch loses its magnetic force and shuts off the pump. This air conditioner drain pump features liquid level monitoring, high intelligence, and durability, preventing leaks in the storage tank. Attached Figure Description

[0023] Figure 1 This is an overall structural diagram of an air conditioner drain pump provided in an embodiment of the present invention;

[0024] Figure 2 An exploded view of an air conditioner drain pump provided in an embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional structural diagram of an air conditioner drain pump provided in an embodiment of the present invention;

[0026] Figure 4 The circuit board control schematic diagram provided in the embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the control principle of a circuit board with operation control terminals inside an air conditioner, provided in an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the control principle of a circuit board without operation control terminals in an air conditioner, provided in an embodiment of the present invention.

[0029] In the attached diagram: 1. Lower housing; 2. Waterproof plate; 3. Rubber plug; 4. Circuit board; 5. Short electrode probe sensor; 6. Water pump; 7. Water pump outlet pipe; 8. Water pump inlet pipe; 9. Upper housing; 10 / 11. Long electrode probe sensor; 12. Filter screen; 13. Waterproof power socket; 14. Level; 15. Mounting plate; 16. Float; a. Outlet; b. Inlet. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Reference Figure 1-3 As shown, the present invention provides an air conditioning drain pump with liquid level monitoring function, comprising:

[0034] The upper outer shell 9, the lower outer shell 1, and the water-blocking plate 2 are fitted together to form a box for collecting condensate. The water-blocking plate 2 is installed inside the box. The lower outer shell 1 and the water-blocking plate 2 form a water storage tank. There is no separate water storage tank, which reduces the volume of the entire product and relatively increases the water storage capacity.

[0035] like Figure 1 As shown, an outlet a and an inlet b are provided on the top of the upper outer shell 9; the inlet b has a detachable filter screen 12 and a connecting pipe passes through the water baffle 2 to connect to the water storage tank; at the condensate inlet b, a filter screen 12 that is easy to remove is added, which can filter impurities in the water to increase its service life, and is also easy to remove and clean when it is too dirty, which is practical and convenient.

[0036] A float 16 with a magnet on top is installed inside the water storage tank; preferably, it is a boat-shaped float, which has greater buoyancy, is less prone to failure, and improves its durability. In addition, to further reduce the collision between the float and the surrounding shell or baffle plate 2 and increase its service life, a float limiting structure can be added to the bottom of the baffle plate 2, such as a fixed vertical slide bar, which passes through the float to ensure that the float can float up and down along the vertical slide bar when the water level rises and falls.

[0037] like Figure 2As shown, a water pump 6, a water pump outlet pipe 7, a water pump inlet pipe 8, a circuit board 4, and a mounting plate 15 are respectively installed on the water-proof plate 2; the water pump 6 is fixedly installed on the water-proof plate 2 by the mounting plate 15; the water-proof plate 2 can also prevent condensate from splashing onto electronic components.

[0038] Water pump 6 is connected to water pump inlet pipe 8 and water pump outlet pipe 7 respectively; the water pump inlet pipe passes through water baffle 8 and extends into the water storage tank; the water pump outlet pipe 7 passes through outlet a and connects to the guide pipe, drawing water from the water storage tank and then discharging it. Figure 2 As shown, a waterproof power socket 13 is provided on the top of the upper housing 9, serving as the power inlet for the entire device. A Hall switch is installed on the circuit board 4, and the control principle is as follows: Figure 4 As shown, the Hall switch control power supply is electrically connected to the water pump 6.

[0039] Additionally, for ease of installation, a level 14 can be fitted to the top of the upper casing 9, allowing installers to quickly determine the installation orientation. A drain outlet is located at the bottom of the lower casing 1, sealed with a rubber plug. This allows for quick manual drainage of condensate from the water tank in case of emergency, by removing the rubber plug.

[0040] Air conditioner condensate enters the water tank through a filter screen at the inlet. The filter screen is easily removable and replaceable, filtering impurities from the water to extend its lifespan and facilitating cleaning when it becomes heavily soiled. The system is practical and convenient. Buoyancy then elevates a float, causing a magnet on its top to approach the circuit board. A Hall effect switch on the board senses this magnetic force and activates the drain pump to drain the water through the outlet pipe. Once drainage is complete and the water level drops, the Hall effect switch loses its magnetic force and shuts off the drain pump. This air conditioner drain pump features a liquid level monitoring function, demonstrating high intelligence and durability, preventing leaks in the water tank.

[0041] Furthermore, to enhance its intelligence, safety, and durability, embodiments of the present invention may employ a triple liquid level control device.

[0042] That is, the float controls the start and stop of the water pump as the first level control device. When the float rises, the Hall switch on the circuit board senses the float and starts the water pump to pump water.

[0043] like Figure 2 As shown, the second liquid level control device consists of two long electrode probe sensors 10 / 11, mounted on circuit board 4. The long electrode probes extend into the water storage tank through the water-blocking plate 2. When the float and / or Hall switch malfunctions and the water pump cannot start, to ensure normal operation, the water level rises to a certain height and touches the two long electrode probe sensors. The long electrode probe sensors detect the liquid level by utilizing the conductivity of the liquid. Once the liquid inside the container touches the probes, it conducts electricity and detects a signal. Figure 4 As shown, after the signal is converted by the signal conversion circuit, the output contact signal is used to control the liquid level, which will automatically start the water pump to drain the water again.

[0044] like Figure 2 As shown, the third liquid level control device is a short electrode probe sensor 5, which is also mounted on the circuit board. The short electrode probe extends into the water storage tank through the water-blocking plate 2. Figure 4 As shown, this short electrode probe sensor directly controls the corresponding air conditioner through the circuit board. When both the first and second heavy liquid level control devices malfunction, as the water level rises, it touches the short electrode probe sensor 5. In order to prevent condensate from overflowing, the air conditioner will be directly powered off and shut down.

[0045] In practice, there are two installation and wiring methods: such as Figure 5 As shown, a drain pump can be directly connected to an air conditioner that has operating control terminals; for example... Figure 6 As shown, another method for air conditioners that do not have internal operating control terminals is to connect an AC controller (AC contactor) between the drain pump and the air conditioner to control the air conditioner.

[0046] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An air conditioning drain pump with liquid level monitoring function, characterized in that, include: The upper and lower outer shells and the water-proof plate; the upper and lower outer shells, when closed together, form a box for collecting condensate. The baffle plate is installed inside the box, and a water storage tank is formed below the baffle plate; The top of the upper outer shell is provided with a water outlet and a water inlet; wherein the water inlet has a detachable filter screen, which is cylindrical in shape and connected to the water storage tank through the water baffle. The water storage tank is equipped with a float with a magnet on top; the float is a boat-shaped float. A water pump, a water pump inlet pipe, a water pump outlet pipe, and a circuit board are respectively installed on the water-proof plate; The water pump is connected to the water pump inlet pipe and the water pump outlet pipe respectively; the water pump inlet pipe extends into the water storage tank through the baffle plate; the water pump outlet pipe passes through the outlet and is connected to the guide pipe. A Hall switch is installed on the circuit board, and the Hall switch is connected to the water pump control. Two long electrode probe sensors are installed on the circuit board. The long electrode probes pass through the water-blocking plate and extend into the water storage tank. The long electrode probe sensors are connected to the water pump control via a signal conversion circuit. A short electrode probe sensor is installed on the circuit board. The short electrode probe passes through the water-proof plate and extends into the water storage tank. The short electrode probe sensor is connected to the corresponding air conditioning control via a signal conversion circuit.

2. An air conditioning drain pump with liquid level monitoring function according to claim 1, characterized in that, The bottom of the baffle plate is provided with a limiting structure, and the float floats up and down along the limiting structure when the water level rises and falls.

3. An air conditioning drain pump with liquid level monitoring function according to claim 1, characterized in that, When the corresponding air conditioner has an operation control terminal, the short electrode probe sensor of the circuit board is connected to the operation control terminal through a signal conversion circuit to control the air conditioner to be in the off state.

4. An air conditioning drain pump with liquid level monitoring function according to claim 1, characterized in that, When the corresponding air conditioner does not have an operation control terminal, the short electrode probe sensor of the circuit board is converted by the signal conversion circuit and then connected to the air conditioner through the AC controller to control the air conditioner to be in the off state.

5. An air conditioning drain pump with liquid level monitoring function according to claim 1, characterized in that, The bottom of the water tank has a drain outlet, which is fitted with a rubber plug.

6. An air conditioning drain pump with liquid level monitoring function according to claim 1, characterized in that, The top of the upper housing is equipped with a level and / or a waterproof power socket; the waterproof power socket is connected to the circuit board and the water pump respectively.

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