Water fetching device and portable air conditioner

Abstract

The utility model provides a water fetching device and a portable air conditioner, relates to the technical field of air conditioners, and solves the technical problems in the prior art that when a water fetching impeller fetches water, the water fetching sound is unstable, the noise is obvious, and the user experience is influenced. The water fetching device and the portable air conditioner comprise a water fetching assembly, the water fetching assembly comprises a driving part and a water fetching impeller, and the water fetching impeller is in transmission connection with the driving part; the water storage tank is arranged at the water outlet end of the water receiving disc and used for receiving condensate water flowing out of the water receiving disc; the lifting assembly is connected with at least part of the structure of the water storage tank, and the lifting assembly drives at least part of the structure of the water storage tank to move in the direction close to or away from the water fetching impeller so as to adjust the distance between the liquid level in the water storage tank and the water fetching impeller. According to the water fetching device and the portable air conditioner, water fetching noise is kept consistent, and user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a water pumping device and a portable air conditioner. Background Art

[0002] During the operation of the air conditioner, since the surface temperature of the evaporator is lower than the dew point temperature of the air, the moisture in the air will be cooled and precipitated on the surface of the evaporator to form condensed water.

[0003] At present, integrated air conditioners often collect the condensed water produced by the evaporator into the water receiving tray below the condenser. The water-pumping impeller in the water receiving tray rotates at high speed driven by the motor to disperse the condensed water and splash the condensed water onto the condenser. The evaporation of water absorbs heat to cool the condenser, thereby improving the heat dissipation efficiency of the condenser and achieving higher cooling capacity and energy efficiency ratio.

[0004] Mobile air conditioners generally have a water tank on the lower end of the condenser, which is used to guide the condensed water generated during heat exchange in the evaporator into the water tank. At the same time, a certain gap is reserved between the multiple fins of the condenser, and a water-pumping impeller is placed in the gap. The motor drives the water-pumping impeller to disperse the condensed water in the water tank, causing it to splash onto the condenser fins, thereby achieving the purpose of cooling the condenser.

[0005] However, the existing water pumping impeller is fixed in position, while the amount of water in the water tank fluctuates. This causes the water pumping impeller to make a fluctuating sound when pumping water, resulting in noticeable noise and affecting user experience. Utility Model Content

[0006] The present invention aims to provide a water pumping device and portable air conditioner to address the technical problem of the prior art, where the pumping impeller produces noticeable, fluctuating noise, which affects the user experience. The various technical effects achieved by the preferred technical solution among the various technical solutions provided by the present invention are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The water pumping device provided by the utility model includes:

[0009] A water pumping assembly includes a driving component and a water pumping impeller, wherein the water pumping impeller is in transmission connection with the driving component;

[0010] A water storage tank is provided at the water outlet of the water receiving tray and is used to receive the condensed water flowing out of the water receiving tray;

[0011] A lifting assembly is connected to at least a portion of the structure of the water tank, and the lifting assembly drives at least a portion of the structure of the water tank to move toward or away from the water pumping impeller to adjust the distance between the liquid level in the water tank and the water pumping impeller.

[0012] Optionally, the water storage tank comprises a tank body and a tank bottom plate, and the tank bottom plate is slidably and sealingly connected to the tank body;

[0013] The lifting assembly is connected to the water tank bottom plate and is used to drive the water tank bottom plate to move in the water tank body in a direction close to or away from the water pumping impeller to adjust the distance between the water tank bottom plate and the water pumping impeller.

[0014] Optionally, a sealing groove is provided on the outer edge of the water tank bottom plate, and a sealing strip is provided in the sealing groove.

[0015] Optionally, a movable guide rail is provided at the bottom of the sink bottom plate, and a movable slider is provided on the inner side wall of the sink body, and the movable guide rail cooperates with the movable slider.

[0016] Optionally, the water tank body and the water receiving tray are formed integrally.

[0017] Optionally, the highest point of the water storage tank is not higher than the lowest point of the water receiving tray.

[0018] Optionally, a gravity sensor is provided on the bottom of the water storage tank, and the gravity sensor is used to detect the weight of the condensed water in the water storage tank.

[0019] Optionally, the lifting component is a lifting motor, and the relationship between the extension distance y of the lifting motor and the weight x of the condensed water in the water storage tank is:

[0020] y=-x / 150+5.

[0021] A portable air conditioner comprises the water pumping device described above.

[0022] Optionally, it includes a shell, an evaporator, a condenser and a water receiving tray, the water receiving tray is arranged below the condenser and the evaporator, and the driving component is arranged on the shell.

[0023] The beneficial effects of the present invention are as follows: the water pumping device and portable air conditioner provided by the present invention include a water pumping assembly, a water storage tank and a lifting assembly. The water storage tank is arranged at the water outlet end of the water receiving tray, and is used for receiving condensed water flowing out of the water receiving tray. The lifting assembly is connected to at least a part of the structure of the water storage tank, and is used for driving at least a part of the structure of the water storage tank to move up and down in a direction close to or away from the water pumping impeller, so as to adjust the distance between the liquid level in the water storage tank and the water pumping impeller; when the amount of water in the water storage tank fluctuates and changes, at least a part of the structure of the water storage tank can follow the lifting movement driven by the lifting assembly, so that the water pumping depth of the water pumping impeller in the water storage tank can be controlled within an appropriate range, thereby ensuring consistent water pumping depth and consistent water pumping noise, solving the technical problems of inconsistent water pumping depth of the water pumping impeller in the prior art, such as fluctuating water pumping sound and obvious noise, thereby improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a three-dimensional diagram of the portable air conditioner of the present utility model;

[0026] Figure 2 It is a schematic diagram of the internal structure of the portable air conditioner of the present utility model;

[0027] Figure 3 This is a top view of the internal structure of the portable air conditioner of the present invention;

[0028] Figure 4 This is a top view of the water receiving tray of the portable air conditioner of the present utility model;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the water storage tank of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the water-drawing bottom plate of the present utility model.

[0031] In the picture:

[0032] 10. Water pumping device; 20. Water receiving tray; 30. Condenser; 40. Evaporator; 50. Shell;

[0033] 11. Water pumping assembly; 12. Water storage tank; 13. Lifting assembly; 21. Liquid level sensor;

[0034] 111. Driving components; 112. Water pumping impeller;

[0035] 121. Sink body; 122. Sink bottom plate; 123. Sealing groove; 124. Sealing strip; 125. Gravity sensor. DETAILED DESCRIPTION

[0036] Please refer to the following drawings Figures 1 to 6 And the text content understands the content of the present invention and the difference between the present invention and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the present invention by means of the accompanying drawings and the enumeration of some optional embodiments of the present invention. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the present invention in this document, nor is it convenient for the implementation of each technical feature to emphasize that it is one of the multiple optional implementations. Therefore, those skilled in the art should know that: any technical means provided by the present invention can be replaced or any two or more technical means or technical features provided by the present invention can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in this embodiment do not limit the scope of protection of the present invention. The scope of protection of the present invention should include any alternative technical solutions that can be thought of by those skilled in the art without paying creative work and new technical solutions obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely for the convenience of describing the present invention and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0039] The utility model provides a water pumping device and a portable air conditioner which maintain consistent water pumping noise and improve user experience.

[0040] The following combination Figures 1 to 6 The technical solution provided by the utility model is described in more detail.

[0041] The utility model provides a water pumping device 10, comprising:

[0042] The water pumping assembly 11 includes a driving component 111 and a water pumping impeller 112, wherein the water pumping impeller 112 is in transmission connection with the driving component 111;

[0043] The water storage tank 12 is provided at the water outlet end of the water receiving tray 20 and is used to receive the condensed water flowing out of the water receiving tray 20;

[0044] The lifting component 13 is connected to at least a portion of the structure of the water tank 12. The lifting component 13 drives at least a portion of the structure of the water tank 12 to move toward or away from the water pumping impeller 112 to adjust the distance between the liquid level in the water tank 12 and the water pumping impeller 112.

[0045] The water pumping device 10 provided by the present invention includes a water pumping component 11, a water storage tank 12 and a lifting component 13. The water storage tank 12 is arranged at the water outlet end of the water receiving tray 20, and is used to receive the condensed water flowing out of the water receiving tray 20. The lifting component 13 is connected to at least part of the structure of the water storage tank 12, and is used to drive at least part of the structure of the water storage tank 12 to move up and down in a direction close to or away from the water pumping impeller 112. When the water amount in the water storage tank 12 fluctuates, at least part of the structure of the water storage tank 12 can follow the lifting movement driven by the lifting component 13 to adjust the distance between the liquid level in the water storage tank 12 and the water pumping impeller 112, so that the water pumping depth of the water pumping impeller 112 in the water storage tank 12 can be controlled within an appropriate range, thereby ensuring consistent water pumping depth and consistent water pumping noise, solving the technical problem of obvious water pumping noise caused by inconsistent water pumping depth of the water pumping impeller 112 in the prior art, and improving user experience.

[0046] It should be noted that the lifting component 13 is at least partially structurally connected to the water tank 12. The lifting component 13 can be connected to the water tank 12 to drive the water tank 12 to move up and down, so that the distance between the liquid level in the water tank 12 and the water-pumping impeller 112 can be adjusted, and the water-pumping depth of the water-pumping impeller 112 in the water tank 12 can be accurately controlled to be within an appropriate range, thereby ensuring that the water-pumping noise remains consistent and improving user experience.

[0047] It can be understood that the water-pumping component 11 includes a driving component 111 and a water-pumping impeller 112. The water-pumping impeller 112 is connected to the driving component 111 in a transmission manner. The driving component 111 drives the water-pumping impeller 112 to rotate, so as to pump the condensed water in the water tank 12 onto the condenser 30 to cool the condenser 30, thereby achieving the function of eliminating drainage of the portable air conditioner and facilitating user use outdoors.

[0048] In some embodiments of the present invention, the water storage tank 12 includes a water tank body 121 and a water tank bottom plate 122 , and the water tank bottom plate 122 is slidably and sealingly connected to the water tank body 121 ;

[0049] The lifting assembly 13 is connected to the water tank bottom plate 122 to drive the water tank bottom plate 122 to move in the water tank body 121 in a direction close to or away from the water pumping impeller 112 to adjust the distance between the water tank bottom plate 122 and the water pumping impeller 112.

[0050] In some of the above-mentioned embodiments of the present invention, the water storage tank 12 includes a water tank body 121 and a water tank bottom plate 122, and the water tank bottom plate 122 is slidingly and sealingly connected to the water tank body 121. The water tank bottom plate 122 can move back and forth in the water tank body 121, and the lifting component 13 is connected to the water tank bottom plate 122, so that under the drive of the lifting component 13, the water tank bottom plate 122 can be moved in a direction close to or away from the water pumping impeller 112, thereby adjusting the distance between the water tank bottom plate 122 and the water pumping impeller 112. When the amount of water in the water storage tank 12 fluctuates, by adjusting the distance between the water tank bottom plate 122 and the water pumping impeller 112, the water level in the water storage tank 12 can be changed, thereby adjusting the water pumping depth of the water pumping impeller 112.

[0051] It can be understood that since the sink bottom plate 122 is slidably arranged in the sink body 121, when the sink bottom plate 122 moves in the sink body 121, it can drive the condensed water above the sink bottom plate 122 to rise and fall, thereby changing the position of the water level according to the change of the water level floating in the water storage tank 12, so that the water pumping depth of the water pumping impeller 112 is within an appropriate range.

[0052] In some embodiments of the present invention, a sealing groove 123 is provided on the outer edge of the sink bottom plate 122 , and a sealing strip 124 is provided in the sealing groove 123 .

[0053] In some of the above-mentioned embodiments of the present invention, a sealing groove 123 is provided on the outer edge of the sink bottom plate 122, and a sealing strip 124 is provided in the sealing groove 123. The sealing strip 124 ensures the sliding sealing cooperation between the sink bottom plate 122 and the sink body 121, so that when the sink bottom plate 122 moves back and forth in the sink body 121, the condensed water on the sink bottom plate 122 will not leak from the gap between the two, thereby effectively ensuring the sealing effect.

[0054] In some embodiments of the present invention, a movable guide rail is provided at the bottom of the sink bottom plate 122 , and a movable slider is provided on the inner side wall of the sink body 121 , and the movable guide rail cooperates with the movable slider.

[0055] In some of the above-mentioned embodiments of the present invention, a movable guide rail and a movable slider are arranged between the sink bottom plate 122 and the sink body 121 to ensure that the sink bottom plate 122 slides smoothly in the sink body 121, thereby improving the sealing effect and effectively ensuring the movement accuracy.

[0056] It can be understood that the movable guide rail is arranged at the bottom of the sink bottom plate 122, and the movable slider is arranged on the inner wall of the sink body 121. The movable guide rail cooperates with the movable slider. When the lifting component 13 drives the sink bottom plate 122 to move back and forth in the sink body 121, the movable guide rail follows the sink bottom plate 122 to move up and down, and the movable slider can provide a guiding function to ensure that the sink bottom plate 122 moves along a predetermined trajectory.

[0057] In some embodiments of the present invention, the water tank body 121 and the water receiving tray 20 are formed integrally.

[0058] In some of the above-mentioned embodiments of the present invention, the sink body 121 and the water receiving tray 20 are integrally formed, and the sink body 121 is directly generated on the water receiving tray 20, ensuring that the sink body 121 can fully receive the condensed water in the water receiving tray 20, thereby reducing the problem of water leakage when the sink body 121 and the water receiving tray 20 are set separately.

[0059] In some embodiments of the present invention, the highest point of the water storage tank 12 is not higher than the lowest point of the water receiving tray 20 .

[0060] In some of the above-mentioned embodiments of the present invention, the water tank 12 is positioned so that its highest point is no higher than the lowest point of the water receiving tank, thereby ensuring that the water tank 12 can fully receive the water in the water receiving tank. When the portable air conditioner evaporator 40 is in use, the evaporator 40 has a low temperature and generates condensed water, which flows along the evaporator 40 into the water receiving tray 20. Because the water tank 12 is located at the lowest point in the entire water receiving tray 20, as the condensed water increases, it will gradually flow into the water tank 12.

[0061] In some embodiments of the present invention, a gravity sensor 125 is provided at the bottom of the water storage tank 12 , and the gravity sensor 125 is used to detect the weight of the condensed water in the water storage tank 12 .

[0062] In some of the above-mentioned embodiments of the present invention, a weight sensor is arranged at the bottom of the water tank 12 to detect the weight of the condensed water in the water tank 12, thereby obtaining the change in the water volume in the water tank 12 through the weight of the condensed water. According to the change in the water volume in the water tank 12, the movement of the lifting component 13 is controlled to make the water pumping depth of the water pumping impeller 112 consistent, thereby improving the water pumping noise and enhancing the user experience.

[0063] It is understandable that the weight sensor is provided between the lifting assembly 13 and the water storage tank 12 , and the weight sensor can detect the weight of the condensed water in the water storage tank 12 .

[0064] In some embodiments of the present invention, the lifting assembly 13 is a lifting motor, and the relationship between the extension distance y of the lifting motor and the weight x of the condensed water in the water storage tank 12 is:

[0065] y=-x / 150+5.

[0066] In some of the above embodiments of the present invention, the length of the water tank 12 is 15 cm, the width is 10 cm, and the maximum depth of the water tank 12 is 5 cm. It can be calculated that the maximum water storage capacity of the water tank 12 is 750 cm. 3 Calculated based on the density of water at standard conditions (ie, 4° C.) being 1 gram per cubic centimeter, the maximum water storage capacity of the water storage tank 12 is 750 g.

[0067] The pumping motor is fixed to the housing 50 and its position cannot be adjusted. The pumping impeller 112 is connected to the drive unit 111 (the pumping motor), so the height of the pumping impeller 112 cannot be adjusted. When the water tank floor 122 is at its lowest point (i.e., when the lift motor is not extended), the lowest point of the pumping impeller 112 is 4 cm above the water tank floor 122. Therefore, the lift motor can only be raised to a maximum height of 4 cm to prevent interference between the water tank floor 122 and the pumping impeller 112.

[0068] When the prototype is turned on, the weight of the weight sensor is first determined. When the water weight is less than or equal to 150g, it means that the amount of water in the water tank 12 is small and the lifting motor is at the highest point. Even if the amount of water in the water tank 12 is small, the pumping impeller 112 can still pump water to dissipate heat for the condenser 30. When the water weight in the water tank 12 is greater than 150g and less than or equal to 300g, it means that the current environmental humidity may be high and the condensed water increases. At this time, the lifting motor extends to a height of 3cm. When the water weight in the water tank 12 is greater than 300g and less than or equal to When the weight of the water in the water tank 12 is greater than 450g, it indicates that the condensed water has further increased, and the lifting motor extends to a height of 2cm. When the weight of the water in the water tank 12 is greater than 450g and less than or equal to 600g, it indicates that the current ambient humidity may be relatively high, and the condensed water has increased significantly. At this time, the lifting motor extends to a height of 1cm. When the weight of the water in the water tank 12 is greater than 600g, it indicates that the current ambient humidity may be very high, and the condensed water has increased significantly. At this time, the lifting motor extends to a height of 0cm, that is, the lifting motor does not extend, and the bottom of the water tank 12 is at the lowest point. The above relationship between motor extension distance and weight simply represents the range of weight in the water tank 12 and the range of lifting motor extension distance. The specific lifting motor extension length is adjusted according to the formula: y = -1 / 150x + 5, where x represents the weight of the water in the water tank 12 and y represents the length of the lifting motor extension. No extension means 0cm, and full extension means 4cm. By adjusting the lifting motor in real time according to this weight change, the pumping depth of the water pumping impeller 112 can be maintained consistent.

[0069] After the prototype is turned off, the lifting motor is fully extended to the maximum distance of 4 cm regardless of its current position, and maintains the current maximum extension distance position to drain excess water in the water tank 12 and reduce the amount of water in the water tray 20 and the water tank 12.

[0070] The present invention also provides a portable air conditioner, comprising the water pumping device 10 as described above.

[0071] In some embodiments of the present invention, the portable air conditioner includes a shell 50, an evaporator 40, a condenser 30 and a water receiving tray 20, the water receiving tray 20 is arranged below the condenser 30, and the driving component 111 is arranged on the shell 50.

[0072] In some of the above embodiments of the present invention, the water receiving tray 20 is arranged below the condenser 30 and the condenser 30. When the portable air conditioner evaporator 40 is in use, the temperature of the evaporator 40 is low and condensed water will be generated. The condensed water will flow along the evaporator 40 into the water receiving tray 20; the driving component 111 is arranged on the shell 50, and the driving component 111 is used to drive the water pumping impeller 112 to rotate, which can pump the condensed water in the water tank 12 onto the condenser 30 to cool the condenser 30, thereby achieving the function of free drainage of the portable air conditioner, which is convenient for users to use outdoors.

[0073] Embodiment 1:

[0074] The water pumping device 10 provided by the present invention includes:

[0075] The water pumping assembly 11 includes a driving component 111 and a water pumping impeller 112, wherein the water pumping impeller 112 is in transmission connection with the driving component 111;

[0076] The water storage tank 12 includes a tank body 121 and a tank bottom plate 122. The tank body 121 is integrally formed with the water receiving tray 20, and the highest point of the tank body 121 is no higher than the lowest point of the water receiving tray 20. The tank bottom plate 122 is slidably and sealingly connected to the tank body 121. The tank body 121 is provided at the water outlet end of the water receiving tray 20 to receive condensed water flowing out of the water receiving tray 20.

[0077] The lifting component 13 is connected to the water tank bottom plate 122 and is used to drive the water tank bottom plate 122 to move in the water tank body 121 in a direction close to or away from the water pumping impeller 112, so as to adjust the distance between the water tank bottom plate 122 and the water pumping impeller 112, so as to change the water pumping depth of the water pumping impeller 112 in the water storage tank 12.

[0078] Furthermore, a sealing groove 123 is provided on the outer edge of the water tank bottom plate 122 , and a sealing strip 124 is provided in the sealing groove 123 .

[0079] Furthermore, a gravity sensor 125 is installed at the bottom of the water tank base 122, located between the lifting assembly 13 and the water tank base 122. The gravity sensor 125 is used to detect the weight of the condensed water in the water tank 12. The lifting assembly 13 is controlled to move according to the water level in the water tank 12, ensuring a consistent pumping depth for the impeller 112, reducing pumping noise and enhancing the user experience.

[0080] Preferably, a liquid level sensor 21 is further provided in the water receiving tray 20 .

[0081] This embodiment also provides a portable air conditioner, including a shell 50, an evaporator 40, a condenser 30, a water receiving tray 20 and the water pumping device 10 as described above, the water receiving tray 20 is arranged below the condenser 30 and the evaporator 40, and the driving component 111 is arranged on the shell 50.

[0082] Throughout this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0083] Of course, the invention of the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A water pumping device, characterized in that: include: A water pumping assembly includes a driving component and a water pumping impeller, wherein the water pumping impeller is in transmission connection with the driving component; A water storage tank is provided at the water outlet of the water receiving tray and is used to receive the condensed water flowing out of the water receiving tray; A lifting assembly is connected to at least a portion of the structure of the water tank, and the lifting assembly drives at least a portion of the structure of the water tank to move toward or away from the water pumping impeller to adjust the distance between the liquid level in the water tank and the water pumping impeller.

2. The water pumping device according to claim 1, characterized in that: The water storage tank comprises a water tank body and a water tank bottom plate, wherein the water tank bottom plate is slidably and sealingly connected to the water tank body; The lifting assembly is connected to the water tank bottom plate and is used to drive the water tank bottom plate to move in the water tank body in a direction close to or away from the water pumping impeller to adjust the distance between the water tank bottom plate and the water pumping impeller.

3. The water pumping device according to claim 2, characterized in that: A sealing groove is provided on the outer edge of the water tank bottom plate, and a sealing strip is provided in the sealing groove.

4. The water pumping device according to claim 2, characterized in that: A movable guide rail is provided at the bottom of the water tank bottom plate, and a movable slider is provided on the inner side wall of the water tank body, and the movable guide rail cooperates with the movable slider.

5. The water pumping device according to claim 2, characterized in that: The water tank body and the water receiving tray are formed integrally.

6. The water pumping device according to any one of claims 1 to 5, characterized in that: The highest point of the water storage tank is not higher than the lowest point of the water receiving tray.

7. The water pumping device according to any one of claims 1 to 5, characterized in that: A gravity sensor is provided on the water storage tank, and the gravity sensor is used to detect the weight of the condensed water in the water storage tank.

8. The water pumping device according to claim 7, characterized in that: The lifting component is a lifting motor. The relationship between the extension distance y of the lifting motor and the weight x of the condensed water in the water storage tank is: y=-x / 150+5.

9. A portable air conditioner, characterized in that: It comprises a water pumping device as described in any one of claims 1-8.

10. The portable air conditioner according to claim 9, characterized in that: The utility model comprises a shell, an evaporator, a condenser and a water receiving tray. The water receiving tray is arranged below the condenser and the evaporator, and the driving component is arranged on the shell.

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