Vacuum pump and cleaning device

Abstract

The utility model discloses a vacuum pump and a cleaning device. The vacuum pump comprises a body and an outlet pipe. The main body is provided with a power cavity, an air suction channel and an air outlet channel, and the air suction channel and the air outlet channel are both communicated with the power cavity; the air outlet pipe is connected with the air outlet channel; wherein the air outlet pipe comprises a connecting section and an extending section, the connecting section is connected with the air outlet channel, the extending section is connected with the connecting section, the aperture of the connecting section is A, the aperture of the air outlet channel is B, and B-B * 10% < = A < = B + B * 10%. The difference between the inner diameter of the extension section and the inner diameter of the air outlet channel is within 10%, so that in the process that fluid is transmitted into the extension section from the air outlet channel, the fluid is not prone to turbulent flow at the junction of the extension section and the air outlet channel, noise can be avoided, and the service life of the air outlet channel is prolonged. The noise in the working process of the vacuum pump can be effectively reduced, and the use comfort of the vacuum pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a vacuum pump and a cleaning device. Background Art

[0002] Cleaning devices, such as sweeping robots, are becoming more and more popular as a new type of household cleaning appliance.

[0003] The vacuum pump is an important component of the cleaning device. The vacuum pump can draw vacuum along a predetermined pipeline during the operation of the cleaning device, and then suck the dust, stains or sewage on the ground into the sewage bucket or dust box of the cleaning device.

[0004] However, when the current vacuum pump is working, it is easy to suck water into the vacuum pump. In order to discharge the water in the vacuum pump, it is usually necessary to connect a pipe to the outlet end of the vacuum pump's air outlet channel to drain the water in the vacuum pump into a predetermined container. The utility model inventor of the present application found that after the pipe was connected to the outlet end of the vacuum pump, the vacuum pump had a relatively loud noise and a relatively poor user experience, which made it difficult to meet people's usage needs. Utility Model Content

[0005] The main purpose of the utility model is to provide a vacuum pump and a cleaning device, so as to at least solve the technical problem that the vacuum pump in the prior art makes relatively loud noise when evacuating.

[0006] According to one aspect of the utility model, there is provided a vacuum pump, comprising:

[0007] A main body, wherein a power chamber, an air intake channel and an air outlet channel are provided on the main body, and the air intake channel and the air outlet channel are both connected to the power chamber;

[0008] an air outlet pipe connected to the air outlet channel;

[0009] Wherein, the air outlet pipe includes a connecting section and an extending section, the connecting section is connected to the air outlet channel, the extending section is connected to the connecting section, the aperture of the connecting section is A, the aperture of the air outlet channel is B, BB*10%≤A≤B+B*10%.

[0010] Furthermore, a first gap is formed between one end of the extension section connected to the connection section and the air outlet channel.

[0011] Furthermore, the width of the first gap is C, where C≤3B.

[0012] Furthermore, the inner diameter of the connecting section is D, wherein A<D≤2A.

[0013] Furthermore, the vacuum pump is provided with an air outlet connector, the air outlet channel is provided on the air outlet connector, and the connecting section is sleeved on the air outlet connector.

[0014] Furthermore, the connecting section is sleeved on the outer circumference of the extending section and is fixedly connected to the extending section.

[0015] Furthermore, the connecting section and the extending section are connected via an adhesive layer or welding, or connected by interference fit, or are integrally formed.

[0016] Furthermore, the connecting section and the air outlet channel are connected by an adhesive layer, welding or interference fit.

[0017] Furthermore, the connecting section and / or the extending section comprises a transparent tube section.

[0018] On the other hand, the present application also provides a cleaning device, the cleaning device comprising:

[0019] Host;

[0020] A sewage tank, the sewage tank being arranged on the host;

[0021] A vacuum pump, wherein the vacuum pump is the above-mentioned vacuum pump, the vacuum pump is arranged on the main machine, and the air outlet channel of the vacuum pump extends to the inlet of the sewage tank.

[0022] In the utility model, when the vacuum pump is used, the inlet end of the suction channel is connected to the chamber that needs to be sucked. At this time, the vacuum pump is working, and the air in the chamber to be sucked can enter the power chamber from the suction channel, and then flow from the power chamber to the outlet channel. Since the outlet channel in the utility model is connected with an outlet pipe, the inner diameter of the extension section of the outlet pipe and the aperture of the outlet channel satisfy the relationship BB*10%≤A≤B+B*10%, that is, the inner diameter of the extension section in the utility model and the inner diameter of the outlet channel differ in size by less than 10%. In this way, when the fluid is transmitted from the outlet channel to the extension section, since the inner diameter of the extension section and the inner diameter of the outlet channel are not much different, the fluid is not likely to cause turbulence at the junction of the two, thereby avoiding the generation of noise, and effectively reducing the noise during the operation of the vacuum pump in the utility model.

[0023] At the same time, since the extension section of the outlet pipe connected to the outlet channel in the utility model has a certain extension distance, as the fluid is continuously transmitted in the extension section, the propagation of sound waves will encounter more interface reflections and absorption, which can disperse and attenuate the sound energy, helping to further reduce the noise of the vacuum pump and improve the comfort and user experience during the use of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0025] Figure 1 It is a front view of the vacuum pump disclosed in the embodiment of the utility model;

[0026] Figure 2 A cross-sectional view of a vacuum pump disclosed in an embodiment of the utility model;

[0027] Figure 3 It is a three-dimensional structural diagram of the cleaning device (without the outer shell) disclosed in the embodiment of the utility model.

[0028] The above drawings include the following reference numerals:

[0029] 10. Main body; 11. Power chamber; 12. Intake channel; 13. Exhaust channel; 14. Exhaust connector; 15. Intake connector; 20. Exhaust pipe; 21. Connecting section; 22. Extension section; 30. First gap; 40. Main unit; 50. Sewage tank. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] After long-term research, the inventor of the present application found that in the prior art, after the outlet end of the air outlet channel of the vacuum pump is connected to a pipe, the inner diameter of the pipe connected to the outlet end of the air outlet channel is larger than the inner diameter of the air outlet channel. At the junction of the pipe and the air outlet channel, turbulence will occur in the fluid, which is easy to generate noise. To this end, the present application provides a new type of vacuum pump, which has relatively low noise during operation and can improve the user experience. The vacuum pump of the present application will be introduced in detail below in conjunction with the accompanying drawings.

[0034] See also Figure 1 to Figure 2 As shown, according to an embodiment of the present application, a vacuum pump is provided. The vacuum pump includes a main body 10 and an air outlet pipe 20 .

[0035] Specifically, the main body 10 is provided with a power chamber 11, an air intake channel 12 and an air outlet channel 13, and the air intake channel 12 and the air outlet channel 13 are both connected to the power chamber 11; the air outlet pipe 20 is connected to the air outlet channel 13; wherein, the air outlet pipe 20 includes a connecting section 21 and an extension section 22, the connecting section 21 is connected to the air outlet channel 13, the extension section 22 is connected to the connecting section 21, the aperture of the connecting section 21 is A, the aperture of the air outlet channel 13 is B, BB*10%≤A≤B+B*10%, for example, A=BB*10%, A=BB*5%, A=B, A=B+B*5% or A=B+B*10%, etc.

[0036] In the present application, when in use, the inlet end of the air intake channel 12 is connected to the chamber to be sucked. At this time, the vacuum pump is working, and the air in the chamber to be sucked can enter the power chamber 11 from the air intake channel 12, and then flow from the power chamber 11 to the air outlet channel 13. Since the air outlet channel 13 in this embodiment is connected with an air outlet pipe 20, the inner diameter of the extension section 22 of the air outlet pipe 20 and the aperture of the air outlet channel 13 satisfy the relationship BB*10%≤A≤B+B*10%, that is, the inner diameter of the extension section 22 in this embodiment differs from the inner diameter of the air outlet channel 13 in size within 10%. In this way, when the fluid is transmitted from the air outlet channel 13 to the extension section 22, since the inner diameter of the extension section 22 is not much different from the inner diameter of the air outlet channel 13, the fluid is not easy to cause turbulence at the junction of the two, thereby avoiding the generation of noise, and can effectively reduce the noise during the operation of the vacuum pump in this embodiment.

[0037] At the same time, since the extension section 22 of the outlet pipe 20 connected to the outlet channel 13 in this embodiment has a certain extension distance, as the fluid is continuously transmitted in the extension section 22, the propagation of sound waves will encounter more interface reflections and absorption, which can disperse and attenuate the sound energy, helping to further reduce the noise of the vacuum pump and improve the comfort and user experience during the use of the vacuum pump.

[0038] In summary, it can be known that in this embodiment, by making the inner diameter of the extension section 22 of the outlet pipe 20 and the aperture of the outlet channel 13 satisfy the relationship BB*10%≤A≤B+B*10%, when the fluid enters the extension section 22 from the outlet channel 13, the flow trend of the fluid is horizontal flow. Compared with turbulent flow, horizontal flow generates less energy conversion and is not easy to generate sound energy, which can achieve a good noise reduction effect.

[0039] See also Figure 1 and Figure 2 As shown, the main body 10 in this embodiment is generally arranged in a columnar shape, and the columnar structure can be a cylindrical structure, an elliptical column, or a prism structure. Figure 1 The figure shows the case where the main body 10 is generally cylindrical. Of course, in other embodiments of the present application, the main body 10 can also be in other shapes, which are not specifically limited in the present application. During processing, the main body 10 is provided with the above-mentioned power chamber 11, and the power chamber 11 is provided with a power element (not shown in the figure). The function of the power element is to provide power for the suction work of the vacuum pump when the vacuum pump is working. The power element is consistent with the power element of the vacuum pump on the market. The power element varies according to the model of the vacuum pump, which is not specifically limited in the present application.

[0040] Further, there is a first gap 30 between the end of the extension section 22 connected to the connecting section 21 and the outlet channel 13. It can be understood that the first gap 30 described here is the gap between the extension section 22 and the outlet end of the outlet channel 13. Exemplarily, the width of the first gap 30 is C, where C≤3B. That is to say, after the outlet pipe 20 is connected to the outlet channel 13, the width of the first gap 30 between the end of the extension section 22 close to the outlet channel 13 and the outlet channel 13 is C≤3B, for example, C can be 0, C=B, C=2B or C=3B, etc. In this way, it can be avoided that the extension section 22 is too far from the outlet channel 13, causing turbulence or turbulence in the air flow at the junction of the extension section 22 and the connecting section 21, and it is more convenient for the fluid in the outlet channel 13 to flow quickly into the extension section 22, which can avoid the generation of noise to a certain extent, and further improve the comfort of the vacuum pump in this embodiment.

[0041] In the actual design process, it is preferred to dock the extension section 22 with the outlet end of the outlet channel 13, that is, the width C of the first gap 30 is preferably 0. In this way, no obvious end surface will be generated at the position where the extension section 22 and the outlet channel 13 are docked. In this way, it is not easy to generate turbulence when the fluid is transmitted to this position, and thus no noise will be generated, which can effectively improve the comfort of the vacuum pump during use.

[0042] In order to facilitate connection, the vacuum pump in this embodiment is provided with an air outlet connector 14, the air outlet channel 13 is provided on the air outlet connector 14, and the connecting section 21 is sleeved on the air outlet connector 14. During actual connection, the connecting section 21 is sleeved on the outer periphery of the extension section 22 and is fixedly connected to the extension section 22. Optionally, the connecting section 21 and the extension section 22 can be connected by an adhesive layer, or can be connected by welding, or can be connected by interference fit. Optionally, the adhesive layer in this embodiment can be a glue layer. By setting the adhesive layer as a glue layer, the gap between the connecting section 21 and the air outlet connector 14 can be sealed while connecting the connecting section 21, which has a simple structure and is convenient for connection.

[0043] Of course, in other embodiments of the present application, the connecting section 21 and the air outlet connector 14 may also be connected via a pipe connector or other structure. As long as it is other deformation methods based on the concept of the present application, they are all within the protection scope of the present application.

[0044] Furthermore, in the present embodiment, the inner diameter of the connecting section 21 is D, wherein A<D≤2A, for example, D=1.2A, D=1.2A, D=1.4A, D=1.6A, D=1.8A, or D=2A, etc. When D>2A, an obvious cross section is likely to appear at the junction of the connecting section 21 and the first gap 30, and noise is likely to be generated at the location where the fluid flows; when D≤A, the extension section cannot be assembled, and an obvious cross section is likely to appear at the junction of the connecting section 21 and the air outlet channel 13, and noise is likely to be generated at the location where the fluid flows. That is to say, in the present embodiment, by making the inner diameter of the connecting section 21 D satisfy the relationship A<D≤2A, it is not only easy to install the extension section 22, but also not easy to generate noise.

[0045] Furthermore, the connection section 21 in this embodiment can be connected to the air outlet channel 13 by an adhesive layer, welding, or interference fit. Of course, in other embodiments of the present application, the connection section 21 and the extension section 22 can also be integrally formed, with high structural strength and good stability.

[0046] Furthermore, the connection section 21 and / or the extension section 22 in this embodiment include a transparent tube section. That is, in this embodiment, the connection section 21 can be set as a transparent tube section, the extension section 22 can be set as a transparent tube section, or both the connection section 21 and the extension section 22 can be set as transparent tube sections. In this embodiment, by setting the connection section 21 and / or the extension section 22 as a transparent tube section, it is more suitable for observing the flow of the internal fluid of the connection section 21 and / or the extension section 22.

[0047] Illustratively, the transparent tube segment in this embodiment includes a transparent plastic tube or a transparent glass tube, etc., which is not specifically limited in this application.

[0048] Of course, in other embodiments of the present application, the connecting section 21 and / or the extending section 22 can also be set as a non-transparent structure. As long as it is other deformation methods based on the concept of the present application, it is within the protection scope of the present application.

[0049] To facilitate connection, the vacuum pump in this embodiment is also provided with an air suction connector 15, wherein the air suction channel 12 is arranged on the air suction connector 15. When the vacuum pump is actually used, the air suction connector 15 can be connected to the cavity to be pumped through a pipeline (not shown in the figure) and other structures. The structure is simple and easy to implement.

[0050] Optionally, the air intake connector 15 and the pipeline may be connected by welding, bonding or interference fit. As long as they are other deformation methods based on the concept of the present application, they are within the protection scope of the present application.

[0051] According to the above embodiments, it can be known that:

[0052] Since the outlet channel 13 in the present embodiment is connected to the outlet pipe 20, the inner diameter of the extension section 22 of the outlet pipe 20 and the aperture of the outlet channel 13 satisfy the relationship BB*10%≤A≤B+B*10%, that is, the inner diameter of the extension section 22 in the present embodiment differs from the inner diameter of the outlet channel 13 by less than 10%. In this way, when the fluid is transmitted from the outlet channel 13 to the extension section 22, since the inner diameter of the extension section 22 is not much different from the inner diameter of the outlet channel 13, turbulence is not likely to occur at the junction of the two, thereby avoiding the generation of noise, and effectively reducing the noise during the operation of the vacuum pump in the present embodiment.

[0053] At the same time, since the extension section 22 of the outlet pipe 20 connected to the outlet channel 13 in this embodiment has a certain extension distance, as the fluid is continuously transmitted in the extension section 22, the propagation of sound waves will encounter more interface reflections and absorption, which can disperse and attenuate the sound energy, helping to further reduce the noise of the vacuum pump and improve the comfort and user experience during the use of the vacuum pump.

[0054] That is to say, the present application connects the air outlet pipe 20 to the air outlet end of the air outlet channel 13 and designs the size of the air outlet pipe 20, so as to avoid turbulence or turbulence in the process of the fluid flowing into the air outlet pipe 20 and avoid the generation of noise. The setting of the extension section 22 can also absorb and attenuate sound energy, which has a good noise reduction effect, and ultimately can achieve the purpose of reducing the noise when the vacuum pump is working.

[0055] See also Figures 1 to 3 As shown, the present application also provides a cleaning device, which may be, for example, a floor scrubber, a floor sweeper, a vacuum cleaner, etc. The cleaning device includes the above-mentioned vacuum pump, and therefore, the cleaning device includes all the technical effects of the above-mentioned vacuum pump.

[0056] In this embodiment, the cleaning device further includes a main unit 40 and a sewage tank 50, wherein the vacuum pump and the sewage tank 50 are both installed on the main unit 40. When the vacuum pump is installed on the cleaning device, such as the main unit 40 in a floor scrubber, the air suction channel 12 of the vacuum pump is connected to the sewage tank 50 of the floor scrubber, and the air outlet channel 13 of the vacuum pump is extended to the entrance of the sewage tank 50. Specifically, the air outlet pipe 20 connected to the air outlet channel 13 is extended to the entrance of the sewage tank 50, and the sewage tank 50 is connected to the dust suction port of the floor scrubber through a pipeline or the like. When the vacuum pump is working, dust, sewage, etc. on the ground can be sucked into the sewage tank. During actual operation, the water in the sewage tank 50 will inevitably be sucked into the vacuum pump sometimes. At this time, through the action of the air outlet pipe 20 at the end of the air outlet channel 13, it is convenient to transport the water entering the vacuum pump to the entrance of the sewage tank 50 for collection, thereby facilitating the recycling of sewage and preventing the sewage sucked by the vacuum pump from leaking to the ground, which can improve the comfort of use of the cleaning device in this embodiment.

[0057] At the same time, in the present embodiment, since the inner diameter of the extension section 22 of the outlet pipe 20 in the present embodiment and the aperture of the outlet channel 13 satisfy the relationship BB*10%≤A≤B+B*10%, that is to say, the inner diameter of the extension section 22 in the present embodiment and the inner diameter of the outlet channel 13 differ by less than 10%. Thus, when the fluid is transmitted from the outlet channel 13 to the extension section 22, since the inner diameter of the extension section 22 and the inner diameter of the outlet channel 13 do not differ much, turbulence is not likely to occur at the junction of the two, thereby avoiding the generation of noise, and effectively reducing the noise during the operation of the vacuum pump in the present embodiment.

[0058] In addition, since the extension section 22 of the outlet pipe 20 connected to the outlet channel 13 in this embodiment has a certain extension distance, as the fluid is continuously transmitted in the extension section 22, the propagation of sound waves will encounter more interface reflections and absorption, which can disperse and attenuate the sound energy, helping to further reduce the noise of the vacuum pump and improve the comfort and user experience during the use of the vacuum pump.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vacuum pump, characterized in that: include: A main body (10), wherein the main body (10) is provided with a power chamber (11), an air intake channel (12) and an air outlet channel (13), and the air intake channel (12) and the air outlet channel (13) are both connected to the power chamber (11); An air outlet pipe (20), the air outlet pipe (20) being connected to the air outlet channel (13); The air outlet pipe (20) comprises a connecting section (21) and an extending section (22), the connecting section (21) is connected to the air outlet channel (13), the extending section (22) is connected to the connecting section (21), the aperture of the connecting section (21) is A, the aperture of the air outlet channel (13) is B, and BB*10%≤A≤B+B*10%.

2. The vacuum pump according to claim 1, characterized in that A first gap (30) is provided between one end of the extension section (22) connected to the connection section (21) and the air outlet channel (13).

3. The vacuum pump according to claim 2, characterized in that The width of the first gap (30) is C, wherein C≤3B.

4. The vacuum pump according to claim 1, characterized in that The inner diameter of the connecting section (21) is D, wherein A<D≤2A.

5. The vacuum pump according to claim 1, characterized in that The vacuum pump is provided with an air outlet connector (14), the air outlet channel (13) is provided on the air outlet connector (14), and the connecting section (21) is sleeved on the air outlet connector (14).

6. The vacuum pump according to claim 1, characterized in that The connecting section (21) is sleeved on the outer circumference of the extending section (22) and is fixedly connected to the extending section (22).

7. The vacuum pump according to claim 6, characterized in that The connecting section (21) and the extending section (22) are connected via an adhesive layer or welding, or connected by interference fit, or are integrally formed.

8. The vacuum pump according to claim 1, characterized in that: The connecting section (21) and the air outlet channel (13) are connected via an adhesive layer, welding or interference fit.

9. The vacuum pump according to any one of claims 1 to 8, characterized in that The connecting section (21) and / or the extending section (22) comprises a transparent tube section.

10. A cleaning device, characterized in that: The cleaning device comprises: Host (40); A sewage tank (50), wherein the sewage tank (50) is arranged on the host machine (40); A vacuum pump, wherein the vacuum pump is the vacuum pump described in any one of claims 1 to 9, wherein the vacuum pump is arranged on the main machine, and an air outlet channel (13) of the vacuum pump extends to the inlet of the sewage tank (50).

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