An electrically driven gas suction pump

Abstract

This utility model discloses an electric vacuum pump, including a housing and a suction chamber. The housing houses a suction unit, a negative pressure detection unit, and a guide channel. The suction chamber is installed at the bottom of the housing and communicates with the guide channel. The suction unit includes a pump body, a connector, and a pipe, used for suctioning gas and / or liquid. The connector connects to the suction chamber via the guide channel and to the pump body's inlet via the pipe, forming the suction channel. The pipe also connects to the pump body's outlet and extends to the outside of the housing, forming an exhaust channel. The negative pressure detection unit communicates with the suction chamber via the connector, forming a negative pressure detection channel independent of the suction channel. Gas and / or liquid enter the exhaust channel through the suction channel and pump body, allowing the suctioned gas and / or liquid to be discharged. It can also be cleaned with water, effectively preventing contamination and bacterial growth. The negative pressure detection unit prevents poor preservation or container damage caused by excessively high or low negative pressure.

Description

Technical Field

[0001] This utility model relates to the field of vacuum preservation equipment, and in particular to an electric air pump. Background Technology

[0002] Vacuum preservation, as an effective food preservation method, has been widely used in households because it can significantly extend the shelf life of food and maintain its freshness. Currently, common vacuum pumps are available in electric and manual versions, but each has some shortcomings in practical use.

[0003] Existing manual vacuum pumps cannot determine the negative pressure value inside the preservation container during use, making it difficult to achieve the ideal vacuum preservation effect. If the negative pressure inside the container is too low, effective preservation cannot be achieved; if the negative pressure is too high, it may damage the preservation container. In addition, the manual vacuum pump has a relatively simple appearance design and is quite tall, requiring more strength to hold and making it relatively laborious to use.

[0004] Existing electric air pumps typically use built-in lithium batteries or dry cell batteries for power. Built-in lithium batteries have a limited lifespan and are difficult to replace, resulting in a shortened overall product lifespan. Products using dry cell batteries require frequent battery replacements, increasing usage costs.

[0005] Secondly, existing electric air pumps are difficult to clean after sucking in food and broth, which can easily breed bacteria and corrode internal components, affecting the product's lifespan and hygiene. Furthermore, most existing electric air pumps lack negative pressure monitoring functions and cannot automatically stop working when a preset negative pressure value is reached, which can easily lead to excessively high negative pressure inside the food storage container and cause damage.

[0006] Finally, the existing electric air pumps have a limited design, mostly cylindrical or square in shape, which are tall and easy to tip over, and cannot meet consumers' demand for diverse appearances. Utility Model Content

[0007] The purpose of this utility model is to provide an electric air pump that solves the problems of single power supply method, difficulty in cleaning the inside, and lack of negative pressure monitoring function in the existing technology, thereby improving the service life and ease of use of the electric air pump.

[0008] To solve the above-mentioned technical problems, this utility model provides an electric air pump, including a housing and an air intake chamber, wherein the housing is provided with an air extraction unit, a negative pressure detection unit and an air guiding channel;

[0009] The air intake chamber is installed below the housing and communicates with the air guide channel;

[0010] The air extraction unit includes a pump body, a connector, and a pipe for drawing in gas and / or liquid; the connector is connected to the air intake chamber through the air guide channel and to the air inlet of the pump body through the pipe, forming an air intake channel; the pipe is also connected to the air outlet of the pump body and extends to the outside of the housing, forming an exhaust channel;

[0011] The negative pressure detection unit is connected to the air intake chamber through the connector, forming a negative pressure detection channel independent of the air intake channel;

[0012] The gas and / or liquid enter the exhaust channel through the intake channel and the pump body, so that the intake gas and / or liquid can be smoothly discharged; when the electric vacuum pump sucks in soup during operation and cleaning is required, clean water is sucked in by the electric vacuum pump to clean the intake channel, the pump body and the exhaust channel.

[0013] Furthermore, the air intake chamber is equipped with a filter screen, and the air intake chamber is detachably connected to the housing.

[0014] Furthermore, the connector is a four-way connector, and the pipe includes an intake pipe and an exhaust pipe;

[0015] The first and second interfaces of the four-way connector are connected to the air intake chamber through the air guide channel, the third interface is connected to the air inlet of the pump body through the air inlet pipe, and the fourth interface is connected to the negative pressure detection unit; the exhaust pipe is connected to the air outlet of the pump body and extends to the outside of the housing.

[0016] Furthermore, the negative pressure detection unit includes a negative pressure monitoring tube and a negative pressure detection switch, and the negative pressure detection switch is connected to the fourth interface of the four-way connector through the negative pressure monitoring tube.

[0017] Furthermore, the housing includes an upper housing and a lower housing, the upper housing and the lower housing being fastened together to form an internal cavity, and the air extraction unit and the negative pressure detection unit are both disposed inside the lower housing.

[0018] Furthermore, it also includes a control unit, which includes a PCB control board disposed inside the lower housing and electrically connected to a negative pressure detection switch, for controlling the pump body to stop working when a preset negative pressure value is detected.

[0019] Furthermore, it also includes a light guide frame and a switch button. The light guide frame is fitted onto the control button on the PCB control board, and the switch button is disposed on the upper housing and contacts the control button.

[0020] Furthermore, a power supply compartment is also provided inside the lower housing, and the PCB control board is electrically connected to the power supply compartment;

[0021] The power compartment contains battery cells, and the battery has two electrodes in contact with the battery cells. The battery includes dry cell batteries and lithium batteries. The power compartment is also equipped with a sliding cover.

[0022] Furthermore, the PCB control board is also provided with a power interface, and the lower housing is provided with a hole that is compatible with the power interface.

[0023] Furthermore, the upper housing is also provided with a detachable decorative outer shell, which is connected to the upper housing by a snap-fit ​​method; both the upper housing and the decorative outer shell are flat arc-shaped, and the whole is shaped like a mouse.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] The electric air pump proposed in this utility model, through the design of independent negative pressure detection channel and air intake and exhaust channels, effectively prevents internal contamination and bacterial growth, thereby improving the hygiene and reliability of the product. The setting of the negative pressure detection unit enables the electric pump to be used safely, avoiding problems such as poor preservation effect or container damage caused by excessively high or low negative pressure.

[0026] Furthermore, by setting up a power supply compartment and a power interface on the PCB control board, users are provided with a more flexible power supply option, further enhancing the product's practicality. By adopting a mouse-like shape design, the height and center of gravity of the electric air pump are lowered, making it easier to hold, lighter, and less prone to tipping over. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an electric air pump in one embodiment of the present invention;

[0028] Figure 2 This is a top view of an electric air pump according to one embodiment of the present invention;

[0029] Figure 3 for Figure 2 Sectional view in;

[0030] Figure 4 This is a schematic diagram of an electric air pump without showing the upper casing in one embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the electric air pump battery removed in one embodiment of the present invention;

[0032] Figure 6 This is an exploded view of an electric air pump according to one embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram showing the connection between the air extraction unit and the negative pressure detection unit of the electric air pump in one embodiment of the present invention.

[0034] Reference numerals: 1. Decorative outer shell; 2. Upper shell; 3. Button; 4. Negative pressure monitoring tube; 5. Negative pressure detection switch; 6. Light guide frame; 7. PCB control board; 8. Battery; 9. Lower shell; 10. Intake chamber; 11. Battery cell; 12. Pump body; 13. Four-way connector; 14. Intake pipe; 15. Exhaust pipe; 16. Air duct; 17. Power interface; 18. Chamber cover. Detailed Implementation

[0035] Based on the teachings of this specification, those skilled in the art can form new technical solutions by combining different implementation methods without creating technical contradictions. Such variations should be considered to fall within the protection scope of this patent.

[0036] The electric air pump of this utility model will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the utility model.

[0037] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0038] like Figures 1 to 7 As shown in the figure, this utility model embodiment proposes an electric air pump, including a housing and an air intake chamber 10. The housing is provided with an air extraction unit, a negative pressure detection unit and an air guide channel 16.

[0039] Specifically, the suction chamber 10 is installed below the housing and communicates with the air guide channel 16. The suction unit includes a pump body 12, a connector, and a pipe for sucking in gas and / or liquid; the connector connects to the suction chamber 10 through the air guide channel 16 and to the air inlet of the pump body 12 through the pipe, forming a suction channel; the pipe also connects to the air outlet of the pump body 12 and extends to the outside of the housing, forming an exhaust channel. The negative pressure detection unit communicates with the suction chamber 10 through the connector, forming a negative pressure detection channel independent of the suction channel. By setting an independent negative pressure detection channel, the negative pressure state inside the suction chamber 10 can be monitored in real time, avoiding damage to the preservation container due to excessive negative pressure. The separate design of the suction unit and the negative pressure detection unit ensures that the suction process does not affect the accuracy of negative pressure detection, improving ease of use. The air guide channel 16 optimizes the airflow path and improves suction efficiency.

[0040] The gas and / or liquid enter the exhaust channel through the intake channel and the pump body 12, allowing the intake gas and / or liquid to be smoothly discharged, preventing accumulation in the intake channel, the pump body 12, and the exhaust channel. When the electric vacuum pump draws in soup during operation and cleaning is required, clean water is drawn in by the electric vacuum pump to clean the intake channel, the pump body 12, and the exhaust channel, keeping them clean, thereby preventing bacterial growth and product damage, and extending service life.

[0041] In this embodiment, the suction chamber 10 is equipped with a filter screen, and the suction chamber 10 is detachably connected to the housing, facilitating regular cleaning by the user to maintain hygiene. The filter screen can be configured as a single layer or multiple layers, with multiple layers using filter screens of different pore sizes stacked together. By installing a filter screen inside the suction chamber 10, food residue or broth can be effectively prevented from entering the suction unit, avoiding contamination or corrosion of internal components.

[0042] Furthermore, the filter screen can be fixed inside the air intake chamber 10 by snaps or threads, located at the connection between the air intake chamber 10 and the air guide channel 16. The detachable connection methods include, but are not limited to, threaded connection, snap-fit ​​connection, or magnetic connection. In the threaded connection, the connection between the air intake chamber 10 and the housing has matching internal and external threads. In the snap-fit ​​connection, the edge of the air intake chamber 10 has an elastic snap, and the corresponding position on the housing has a slot. In the magnetic connection, the connection between the air intake chamber 10 and the housing has mutually attracting magnets.

[0043] In this embodiment, the connector is a four-way connector 13, thereby better realizing airflow distribution. The pipeline includes an inlet pipe 14 and an exhaust pipe 15. The first and second interfaces of the four-way connector 13 are connected to the intake chamber 10 through the air guide channel 16, the third interface is connected to the air inlet of the pump body 12 through the inlet pipe 14, and the fourth interface is connected to the negative pressure detection unit; the exhaust pipe 15 is connected to the air outlet of the pump body 12 and extends to the outside of the housing.

[0044] The connector, through the structure of the four-way connector 13, achieves an integrated arrangement of the air intake channel, the air exhaust channel, and the negative pressure detection channel. After the gas in the air intake chamber 10 enters the four-way connector 13 through the air guide channel 16, it is divided into two paths: one path enters the pump body 12 through the air inlet pipe 14 to form the air intake channel, and the other path connects to the negative pressure detection unit to form an independent detection channel. This not only simplifies the pipeline layout and improves the space utilization rate, but also improves the air extraction efficiency and negative pressure detection accuracy through the optimized design of the airflow path, avoiding problems such as poor preservation effect or container damage caused by excessively high or low negative pressure.

[0045] In this embodiment, as Figure 4 and Figure 7 As shown, the negative pressure detection unit includes a negative pressure monitoring tube 4 and a negative pressure detection switch 5. The negative pressure detection switch 5 is connected to the fourth interface of the four-way connector 13 through the negative pressure monitoring tube 4, forming a negative pressure detection channel independent of the suction channel. This improves the accuracy of negative pressure detection, ensuring that the accuracy is not affected even when gas containing broth or other impurities is inhaled, thereby improving the reliability and service life of the electric vacuum pump. The electric vacuum pump, through the combination of the negative pressure monitoring tube 4 and the negative pressure detection switch 5, can monitor the negative pressure value inside the preservation container in real time. The negative pressure monitoring tube 4 serves as a connection channel, enabling the negative pressure detection switch 5 to accurately sense changes in the negative pressure inside the container, thus automatically controlling the operation of the electric vacuum pump according to a preset negative pressure value. When the negative pressure inside the preservation container reaches the preset value, the negative pressure detection switch 5 triggers the electric vacuum pump to stop working, effectively preventing damage to the preservation container due to excessive negative pressure and avoiding poor preservation due to insufficient negative pressure, ensuring the vacuum preservation effect of the food.

[0046] In this embodiment, the housing includes an upper housing 2 and a lower housing 9. The upper housing 2 and the lower housing 9 are fastened together to form an internal cavity. The air extraction unit and the negative pressure detection unit are both disposed in the lower housing 9.

[0047] In one specific embodiment, the housing may be made of plastic or metal, preferably ABS plastic to reduce weight.

[0048] In a preferred embodiment, the lower shell 9 is provided with a positioning groove or mounting bracket for fixing the positions of the air extraction unit and the negative pressure detection unit.

[0049] In this embodiment, the electric vacuum pump further includes a control unit, which comprises a PCB control board 7. The PCB control board 7 is disposed within the lower housing 9 and electrically connected to a negative pressure detection switch 5, used to control the pump body 12 to stop working when a preset negative pressure value is detected. When the negative pressure detection switch 5 detects that the preset negative pressure value has been reached inside the container, the PCB control board 7 immediately cuts off the power supply to the pump body 12, thus avoiding damage to the container due to excessive vacuuming and preventing energy waste.

[0050] In this embodiment, the electric air pump further includes a light guide frame 6 and a switch button 3. The light guide frame 6 is sleeved on the control button 3 of the PCB control board 7, and the switch button 3 is disposed on the upper housing 2 and contacts the control button 3. When the user presses the switch button 3, the light guide frame 6 can intuitively display the working status of the electric air pump through changes in light (such as turning on or off), making it easier for the user to understand the operation of the equipment and enhancing the convenience of operation and user experience.

[0051] In this embodiment, specifically as follows: Figure 5 As shown, a power supply compartment is also provided inside the lower shell 9, and the PCB control board 7 is electrically connected to the power supply compartment. A battery cell 11 is disposed inside the power supply compartment, and a battery 8 is built into the power supply compartment, with the two poles of the battery 8 in contact with the battery cell 11; the power supply compartment is also provided with a sliding cover 18. By setting the power supply compartment inside the lower shell 9, convenient replacement and maintenance of the battery 8 are achieved. The sliding cover 18 simplifies the battery 8 replacement operation and avoids the cumbersome traditional screw fixing method. The direct contact between the battery cell 11 and the electrodes improves conductivity reliability and reduces contact resistance.

[0052] In a specific embodiment, the battery 8 includes a dry cell battery and a removable lithium battery, and a suitable battery can be selected according to specific needs.

[0053] In this embodiment, the PCB control board 7 is further provided with a power interface 17, and the lower shell 9 is provided with a hole adapted to the power interface 17. Specifically, the power interface 17 can adopt a standard interface form such as Micro USB, Type-C or DC round hole for connecting an external power adapter. Preferably, Type-C is selected as the power interface 17.

[0054] The power interface 17 is soldered to the power management module of the PCB control board 7 via wires. When the built-in battery 8 is depleted, it can be continuously powered by an external power source, avoiding the need for frequent battery replacements. The hole size on the lower shell 9 matches the outer diameter of the power interface 17, and a waterproof rubber ring can be provided at the edge of the hole to prevent liquid seepage.

[0055] As can be seen from the above, the electric air pump supports power supply from lithium batteries or dry batteries, and can also be powered directly through a power adapter. The three power supply modes can be used independently without interfering with each other, thus providing users with great convenience and freedom of choice.

[0056] In this embodiment, a detachable decorative outer shell 1 is also provided outside the upper housing 2, and the decorative outer shell 1 is connected to the upper housing 2 by a snap-fit ​​method. The decorative outer shell 1 is detachably connected to the upper housing 2 through a snap-fit ​​structure, which can be an elastic snap-fit ​​or a press-type snap-fit. The decorative outer shell 1 can be made of silicone, which also provides a variety of appearance options for the electric air pump. Users can change different decorative outer shells 1 according to their personal preferences or home decoration styles, thereby achieving personalized customization. Both the upper housing 2 and the decorative outer shell 1 are flat and arc-shaped, with an overall mouse shape, which conforms to ergonomic principles, making it more comfortable for users to hold and easier to use. The flat and arc-shaped design lowers the center of gravity of the product, making it less prone to tipping over, further improving the stability and ease of use of the product.

[0057] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An electrically driven gas pumping pump, characterized in that It includes a housing and an air intake chamber, wherein the housing is equipped with an air extraction unit, a negative pressure detection unit and an air guiding channel; The air intake chamber is installed below the housing and communicates with the air guide channel; The air extraction unit includes a pump body, a connector, and a pipe for drawing in gas and / or liquid; the connector is connected to the air intake chamber through the air guide channel and to the air inlet of the pump body through the pipe, forming an air intake channel; the pipe is also connected to the air outlet of the pump body and extends to the outside of the housing, forming an exhaust channel; The negative pressure detection unit is connected to the air intake chamber through the connector, forming a negative pressure detection channel independent of the air intake channel; The gas and / or liquid enter the exhaust channel through the intake channel and the pump body, so that the intake gas and / or liquid can be smoothly discharged; when the electric vacuum pump sucks in soup during operation and cleaning is required, clean water is sucked in by the electric vacuum pump to clean the intake channel, the pump body and the exhaust channel.

2. An electric gas pump as claimed in claim 1, characterized in that The air intake chamber is equipped with a filter screen, and the air intake chamber is detachably connected to the housing.

3. An electric gas pump as claimed in claim 1, characterized in that The connector is a four-way joint, and the pipe includes an intake pipe and an exhaust pipe; The first and second interfaces of the four-way connector are connected to the air intake chamber through the air guide channel, the third interface is connected to the air inlet of the pump body through the air inlet pipe, and the fourth interface is connected to the negative pressure detection unit; the exhaust pipe is connected to the air outlet of the pump body and extends to the outside of the housing.

4. An electric gas pump as claimed in claim 3, characterised in that The negative pressure detection unit includes a negative pressure monitoring tube and a negative pressure detection switch. The negative pressure detection switch is connected to the fourth interface of the four-way connector through the negative pressure monitoring tube.

5. The electric gas pump of claim 1, wherein, The housing includes an upper housing and a lower housing, which are fastened together to form an internal cavity. The air extraction unit and the negative pressure detection unit are both located inside the lower housing.

6. An electric gas pump as claimed in claim 5, characterised in that It also includes a control unit, which includes a PCB control board disposed inside the lower housing and electrically connected to a negative pressure detection switch, for controlling the pump to stop working when a preset negative pressure value is detected.

7. An electric gas pump as claimed in claim 6, characterised in that It also includes a light guide frame and a switch button. The light guide frame is fitted onto the control button on the PCB control board, and the switch button is located on the upper housing and is in contact with the control button.

8. An electric gas pump as claimed in claim 6, characterized in that The lower housing is also provided with a power supply compartment, and the PCB control board is electrically connected to the power supply compartment; The power compartment contains battery cells, and the battery has two electrodes in contact with the battery cells. The battery includes dry cell batteries and lithium batteries. The power compartment is also equipped with a sliding cover.

9. An electric gas pump as claimed in claim 6, characterized in that The PCB control board is also provided with a power interface, and the lower housing is provided with a hole that is compatible with the power interface.

10. An electric gas pump as claimed in claim 5, characterized in that The upper housing is also provided with a detachable decorative outer shell, which is connected to the upper housing by a snap-fit ​​method; both the upper housing and the decorative outer shell are flat and arc-shaped, and the whole is shaped like a mouse.

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