Vacuum cleaner and control method

Abstract

The invention discloses a dust collector and a control method, and relates to the technical field of dust collectors, and the dust collector comprises a dust collection pipeline, a first fan, a vacuum chamber and a second fan. The dust collection pipeline is provided with a dust collection opening. And an air inlet of the first fan is communicated with the dust collection pipeline. And a first valve is connected between the vacuum chamber and the dust collection pipeline. An air inlet of the second fan is communicated with the vacuum chamber, and the second fan can vacuumize the vacuum chamber. When dust particles needing to be sucked by the dust collector are small, the first fan can be set in an operation state; when dust particles are large, the second draught fan can vacuumize the vacuum cavity, then the first valve is set in an open state, the negative pressure of the dust collection opening can be instantly enhanced, the dust collection effect of the dust collection pipeline on dust can be enhanced, the first draught fan and the second draught fan can be arranged in a high-energy-efficiency area, the power factors of the first draught fan and the second draught fan are guaranteed, and the dust collection effect of the dust collection pipeline is improved. And the endurance of the dust collector is improved on the whole.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and in particular to a vacuum cleaner and a control method thereof. Background Art

[0002] A common vacuum cleaner includes an air duct, a fan, and a cavity. The air duct, fan, and cavity are interconnected, and the air duct has a dust extraction port. When the fan is turned on, a low pressure is generated at the dust extraction port of the air duct, which forces dust into the air duct through the dust extraction port and further into the cavity. When vacuuming, there are often multiple vacuuming gears corresponding to different dust particle sizes. When switching the vacuuming gear, the fan speed is often adjusted to adjust the vacuuming gear. The fan speed of the vacuum cleaner is proportional to the fan power. When the operating condition is small, that is, when the power gear is low, the fan speed is not in the high energy efficiency zone, and the fan power factor is low, which reduces the working life of the vacuum cleaner. Summary of the Invention

[0003] The main purpose of the present invention is to provide a vacuum cleaner and a control method, aiming to improve the battery life of the vacuum cleaner.

[0004] To achieve the above-mentioned purpose, the present invention provides a vacuum cleaner, wherein the vacuum duct has a vacuum port; a first fan, wherein the air inlet of the first fan is connected to the dust collection duct; A first valve is connected between the vacuum chamber and the dust collection pipe; and A second fan, wherein the air inlet of the second fan is connected to the vacuum chamber, and the second fan can evacuate the vacuum chamber.

[0005] In one embodiment, a plurality of the second fans are provided in a one-to-one correspondence with the vacuum chambers.

[0006] In one embodiment, the first valve comprises a solenoid valve.

[0007] In one embodiment, the air outlet of the second fan is provided with a second valve; or, A second valve is connected between the second blower and the vacuum chamber.

[0008] In one embodiment, the second valve comprises a solenoid valve.

[0009] The present invention also provides a method for controlling a vacuum cleaner, comprising the following steps: Setting the first fan to an operating state to generate negative pressure at the suction port; After the vacuum chamber is evacuated, the first valve is set to an open state to connect the corresponding vacuum chamber and the dust suction pipe to enhance the negative pressure of the dust suction port.

[0010] In one embodiment, a plurality of the second fans are provided in a one-to-one correspondence with the vacuum chambers; After the vacuum chamber is evacuated, the first valve is set to an open state, comprising the following steps: Select the vacuum gear and choose the corresponding number of vacuum chambers according to the vacuum gear; Setting the first valve to a closed state, and then setting the corresponding second blower to an operating state to evacuate the corresponding vacuum chamber; The corresponding first valve is set to an open state.

[0011] In one embodiment, a second valve is connected between the second blower and the vacuum chamber; The step sets the first valve to a closed state, and then sets the corresponding second blower to an operating state to evacuate the corresponding vacuum chamber, including the following steps: When the second blower has been running for a preset time, and / or the vacuum chamber has reached a preset pressure, closing the second valve to seal the vacuum chamber; The second fan is set to a shutdown state.

[0012] In one embodiment, a second valve is connected between the second blower and the vacuum chamber; After the first valve is set to an open state in the step to connect the corresponding vacuum chamber and the dust collection pipe, the following steps are also included: The first valve is set to a closed state to seal the vacuum chamber.

[0013] In one embodiment, a second valve is connected between the second blower and the vacuum chamber; After the first valve is opened in the step to connect the corresponding vacuum chamber and the dust collection pipe, the following steps are also included: The second valve is set to an open state, and the second fan is set to a running state.

[0014] In the technical solution of the present invention, when the dust particles that need to be sucked by the vacuum cleaner are small, the first fan can be set to an operating state, so that the first fan generates negative pressure at the dust suction port to suck small particles of dust; when the dust particles are large, the second fan can be made to vacuum the vacuum chamber, and then the first valve is set to an open state. When the vacuum chamber is connected to the dust suction pipe, the negative pressure of the dust suction port can be instantly enhanced to enhance the dust suction effect of the dust suction pipe on the dust, which ensures the vacuum cleaner's suction of large particles of dust as a whole, and the first fan and the second fan can be set in a high energy efficiency zone to ensure the power factor of the first fan and the second fan, thereby improving the endurance of the vacuum cleaner as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 the structures shown in these drawings without paying any creative work.

[0016] Figure 1 A schematic structural diagram of an embodiment of a vacuum cleaner provided by the present invention; Figure 2 for Figure 1 Schematic diagram of the cross section of the AA section; Figure 3 A schematic flow chart of an embodiment of a method for controlling a vacuum cleaner provided by the present invention; Figure 4 for Figure 3 Schematic diagram of a partial flow chart of the control method of the vacuum cleaner.

[0017] Description of Figure Numbers: 100. Vacuum cleaner; 1. Dust collection duct; 11. First installation chamber; 111. First air inlet; 112. First air outlet; 12. Second installation chamber; 121. Second air inlet; 122. Second air outlet; 2. First fan; 3. Vacuum chamber; 4. First valve; 5. Second fan; 6. Second valve; 7. Housing.

[0018] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] A common vacuum cleaner includes an air duct, a fan, and a cavity. The air duct, fan, and cavity are interconnected, and the air duct has a dust extraction port. When the fan is turned on, a low pressure is generated at the dust extraction port of the air duct, which forces dust into the air duct through the dust extraction port and further into the cavity. When vacuuming, there are often multiple vacuuming gears corresponding to different dust particle sizes. When switching the vacuuming gear, the fan speed is often adjusted to adjust the vacuuming gear. The fan speed of the vacuum cleaner is proportional to the fan power. When the operating condition is small, that is, when the power gear is low, the fan speed is not in the high energy efficiency zone, and the fan power factor is low, which reduces the working life of the vacuum cleaner.

[0023] The present invention provides a vacuum cleaner.

[0024] See also Figure 1 and Figure 2In one embodiment of the present invention, a vacuum cleaner 100 includes a dust collection duct 1, a first fan 2, a vacuum chamber 3, and a second fan 5. The dust collection duct 1 has a dust collection port. The air inlet of the first fan 2 is connected to the dust collection duct 1. A first valve 4 is connected between the vacuum chamber 3 and the dust collection duct 1. The air inlet of the second fan 5 is connected to the vacuum chamber 3, and the second fan 5 is capable of evacuating the vacuum chamber 3.

[0025] In the technical solution of the present invention, when the dust particles to be sucked by the vacuum cleaner 100 are small, the first fan 2 can be set to an operating state, so that the first fan 2 generates a negative pressure at the dust suction port to suck small particles of dust; when the dust particles are large, the second fan 5 can be made to vacuum the vacuum chamber 3, and then the first valve 4 can be set to an open state. When the vacuum chamber 3 is connected to the dust suction pipe 1, the negative pressure of the dust suction port can be instantly enhanced to enhance the dust suction effect of the dust suction pipe 1 on dust, which ensures the dust suction of large particles by the vacuum cleaner 100 as a whole, and the first fan 2 and the second fan 5 can be set in a high energy efficiency zone to ensure the power factor of the first fan 2 and the second fan 5, thereby improving the endurance of the vacuum cleaner 100 as a whole.

[0026] The vacuum cleaner 100 in the present application can be powered by a battery, and the rated power of the first blower 2 and the second blower 5 can be equal or unequal, which is not limited here. The outer shell material of the dust collection duct 1 and the vacuum chamber 3 can be metal or non-metal, which is not limited here. The dust collection duct 1 and the vacuum chamber 3 can be integrally formed or separately formed, which is not limited here; specifically, the vacuum cleaner 100 also has a shell 7, and the dust collection duct 1 and the vacuum chamber 3 are both integrally formed with the shell 7, and the dust collection duct 1 and the vacuum chamber 3 are formed in the shell 7.

[0027] The dust collection duct 1 is connected to a dust holding chamber, so that after the dust is collected by the dust collection duct 1, the dust is sent into the dust holding chamber to achieve temporary storage of the dust. The vacuum cleaner 100 includes a housing 7, which further includes a first installation chamber 11 and a second installation chamber 12. The first installation chamber 11 is provided corresponding to the first fan 2, and the first fan 2 is provided in the first installation chamber 11. The first installation chamber 11 has a first air inlet 111 and a first air outlet 112. The first air inlet 111 connects the dust collection duct 1 and the air inlet of the first fan 2, and the first air outlet 112 is used to exhaust air from the first fan 2. The second fan 5 is arranged in the second installation chamber 12, and multiple second fans 5 are arranged one by one corresponding to the second installation chamber 12. The second installation chamber 12 has a second air inlet 121 and a second air outlet 122. The second air inlet 121 connects the vacuum chamber 3 and the air inlet of the second fan 5, and the second air outlet 122 is used for the second fan 5 to discharge air.

[0028] The second valve 6 is provided in the second air inlet 121. The second valve 6 can control the connection between the second fan 5 and the vacuum chamber 3. When the second valve 6 is opened, the second fan 5 can evacuate the vacuum chamber 3. After the second valve 6 is closed, the vacuum chamber 3 can be kept sealed to ensure the air pressure in the vacuum chamber 3.

[0029] See also Figure 2 Multiple second fans 5 are provided in a one-to-one correspondence with each vacuum chamber 3. Multiple second fans 5 exhaust the multiple vacuum chambers 3, respectively, thereby ensuring efficient evacuation of the vacuum chambers 3. Two, three, or more second fans 5 can be provided in a one-to-one correspondence with each vacuum chamber 3, without limitation. Specifically, two second fans 5 are provided in a one-to-one correspondence with each vacuum chamber 3.

[0030] When it is necessary to suction larger particles of dust, the corresponding number of vacuum chambers 3 can be selected according to the size of the dust, so that the corresponding number of vacuum chambers 3 is connected to the dust collection pipe 1 at the same time, thereby instantly enhancing the suction force of the dust collection port. The volumes of the multiple vacuum chambers 3 can also be set to different sizes. When it is necessary to suction larger particles of dust, the corresponding number and size of vacuum chambers 3 can be selected according to the size of the dust, so that the vacuum chambers 3 are connected to the dust collection pipe 1 at the same time, thereby instantly enhancing the suction force of the dust collection port.

[0031] The first valve 4 includes a solenoid valve. By configuring the first valve 4 as a solenoid valve, it is possible to facilitate switching of the operating state of the first valve 4, thereby achieving automatic switching of the operating state of the first valve 4.

[0032] The air outlet of the second fan 5 is provided with a second valve 6. By setting the second valve 6 in the open state, the vacuum pumping effect of the second fan 5 on the vacuum chamber 3 can be guaranteed; by setting the second valve 6 in the closed state, the sealing of the vacuum chamber 3 can be guaranteed, thereby ensuring the vacuum degree of the vacuum chamber 3.

[0033] See also Figure 2 A second valve 6 is connected between the second blower 5 and the vacuum chamber 3. By setting the second valve 6 in the open state, the vacuum pumping effect of the second blower 5 on the vacuum chamber 3 can be ensured; by setting the second valve 6 in the closed state, the sealing of the vacuum chamber 3 can be ensured, thereby maintaining the vacuum level of the vacuum chamber 3.

[0034] The second valve 6 comprises a solenoid valve. By configuring the second valve 6 as a solenoid valve, the operating state of the second valve 6 can be easily switched, achieving automatic switching of the operating state of the second valve 6. Specifically, the second valve 6 is disposed at the air outlet of the vacuum chamber 3 to ensure the vacuuming and sealing of the vacuum chamber 3.

[0035] The present invention also proposes a control method for a vacuum cleaner 100, which includes a method for controlling a vacuum cleaner 100. The specific structure of the vacuum cleaner 100 refers to the above embodiment. Since the control method of the vacuum cleaner 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here. Figure 3 , the vacuum cleaner 100 comprises the following steps: S1: Setting the first fan 2 to an operating state to generate negative pressure at the dust suction port.

[0036] By setting the first fan 2 to the operating state, the vacuum cleaner 100 can be guaranteed to collect small particles of dust. While ensuring the vacuum cleaner 100's effect of collecting small particles of dust, the first fan 2 can be set to the rated power to ensure that the first fan 2 is in a high energy efficiency zone, thereby ensuring the endurance of the vacuum cleaner 100.

[0037] S3: After the vacuum chamber 3 is evacuated, the first valve 4 is set to an open state to connect the corresponding vacuum chamber 3 and the dust suction pipe 1 to enhance the negative pressure of the dust suction port.

[0038] The vacuum chamber 3 is evacuated by the second fan 5, so that the negative pressure of the vacuum chamber 3 after evacuation is lower than the negative pressure during the exhaustion by the second fan 5. By connecting the vacuum chamber 3 and the dust collection duct 1, the negative pressure at the dust collection port can be instantly increased, thereby enhancing the suction force of the dust collection port and allowing large dust particles to be sucked into the dust collection duct 1.

[0039] After the vacuum chamber 3 and the dust collection duct 1 are connected, the first valve 4 can be set to a closed state to allow the first fan 2 to provide negative pressure to the dust collection duct 1. After the vacuum chamber 3 and the dust collection duct 1 are connected, the second fan 5 can also be set to an operating state so that the first fan 2 and the second fan 5 cooperate to increase the negative pressure of the dust collection port, thereby achieving dust collection of larger particles.

[0040] See also Figure 4 , a plurality of second fans 5 are provided in a one-to-one correspondence with the vacuum chamber 3; after evacuating the vacuum chamber 3, the first valve 4 is set to an open state, comprising the following steps: S21: Select a vacuuming gear, and select a corresponding number of vacuum chambers 3 according to the vacuuming gear.

[0041] For example, the size of dust particles can be divided into the first, second, and third levels, etc. from small to large. When the size of the dust particles is the first level, the first fan 2 can be used to suck the first-level dust into the dust collection duct 1 when it is in operation. When the dust particles are the second level, one vacuum chamber 3 can be connected to the dust collection duct 1 to suck the second-level dust into the dust collection duct 1. When the dust particles are the third level, two vacuum chambers 3 can be connected to the dust collection duct 1 to suck the third-level dust into the dust collection duct 1, and so on. When a large amount of second-level dust particles needs to be sucked, the two second fans 5 can be started so that the two second fans 5 and the first fan 2 simultaneously provide negative pressure to the dust collection duct 1, so that the dust collection duct 1 can suck the second-level dust particles. When a large amount of tertiary dust particles need to be sucked, three or four second fans 5 can be started so that the three or four second fans 5 and the first fan 2 simultaneously provide negative pressure to the dust collection pipe 1 so that the dust collection pipe 1 can suck the secondary dust particles.

[0042] S22 : setting the first valve 4 to a closed state, and then setting the corresponding second blower 5 to a running state to evacuate the corresponding vacuum chamber 3 .

[0043] By setting the first valve 4 to a closed state, it is possible to ensure that the second blower 5 evacuates the vacuum chamber 3 , thereby ensuring that the vacuum chamber 3 is evacuated.

[0044] S23: Setting the corresponding first valve 4 to an open state.

[0045] After the first valve 4 is set to the open state, the vacuum chamber 3 can be connected to the dust suction pipe 1, so that the vacuum chamber 3 can evacuate the dust suction pipe 1, thereby increasing the negative pressure of the dust suction port; thereby improving the dust suction effect of the dust suction pipe 1.

[0046] A second valve 6 is connected between the second blower 5 and the vacuum chamber 3; the step of setting the first valve 4 to a closed state and then setting the corresponding second blower 5 to an operating state to evacuate the corresponding vacuum chamber 3 includes the following steps: S221a: When the operating time of the second fan 5 reaches a preset time, the second valve 6 is closed to seal the vacuum chamber 3 .

[0047] By running the second blower 5 for a preset duration, a preset pressure can be reached within the vacuum chamber 3, thereby ensuring a vacuum level within the vacuum chamber 3. Specifically, the preset duration can be determined based on the power of the second blower 5 and the target vacuum level of the vacuum chamber 3, as determined through experimental testing. A controller can be provided within the vacuum cleaner 100, electrically connected to the second blower 5, and the operating duration of the second blower 5 can be controlled by the controller.

[0048] S222: Setting the second fan 5 to a shutdown state.

[0049] By setting the second fan 5 to the shutdown state, the energy consumption of the second fan 5 can be reduced.

[0050] A second valve 6 is connected between the second blower 5 and the vacuum chamber 3; the step of setting the first valve 4 to a closed state and then setting the corresponding second blower 5 to an operating state to evacuate the corresponding vacuum chamber 3 includes the following steps: S221b: When the vacuum chamber 3 reaches a preset pressure, the second valve 6 is closed to seal the vacuum chamber 3 .

[0051] When the vacuum chamber 3 reaches a preset pressure, the second valve 6 is closed to maintain the vacuum level within the vacuum chamber 3. A barometer may be provided within the vacuum chamber 3 to detect the gas pressure within the vacuum chamber 3. Alternatively, a single barometer may be provided to sequentially detect the pressures of multiple vacuum chambers 3, without limitation herein.

[0052] S222: Setting the second fan 5 to a shutdown state.

[0053] By setting the second fan 5 to the shutdown state, the energy consumption of the second fan 5 can be reduced.

[0054] A second valve 6 is connected between the second fan 5 and the vacuum chamber 3. After the first valve 4 is set to an open state in the step to connect the corresponding vacuum chamber 3 and the dust collection pipe 1, the following step is also included: setting the first valve 4 to a closed state to seal the vacuum chamber 3.

[0055] By setting the first valve 4 to a closed state, the second blower 5 can facilitate vacuuming the vacuum chamber 3 again, while reducing the amount of air drawn from the vacuum chamber 3 by the dust collection pipe 1 .

[0056] A second valve 6 is connected between the second fan 5 and the vacuum chamber 3; after the first valve 4 is set to the open state in the step to connect the corresponding vacuum chamber 3 and the dust collection pipe 1, the following steps are also included: setting the second valve 6 to the open state and setting the second fan 5 to the running state.

[0057] By setting the second valve 6 to an open state, the second fan 5 can cooperate with the first fan 2 to enhance the suction force of the dust collection duct 1, so that the dust collection duct 1 can collect large particles of dust.

[0058] The control method of the vacuum cleaner 100 includes a controller and a display screen. The controller has different control buttons corresponding to different operating states to facilitate manual switching of the operating states; the display screen is used to display the corresponding operating states.

[0059] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A vacuum cleaner, characterized in that: include: A dust suction duct having a dust suction port; a first fan, wherein the air inlet of the first fan is connected to the dust collection duct; A first valve is connected between the vacuum chamber and the dust collection pipe; and A second fan, wherein the air inlet of the second fan is connected to the vacuum chamber, and the second fan can evacuate the vacuum chamber.

2. The vacuum cleaner according to claim 1, wherein A plurality of the second fans are provided in a one-to-one correspondence with the vacuum chambers.

3. The vacuum cleaner according to claim 1, wherein The first valve includes a solenoid valve.

4. The vacuum cleaner according to claim 1, wherein The air outlet of the second fan is provided with a second valve; or, A second valve is connected between the second blower and the vacuum chamber.

5. The vacuum cleaner according to claim 4, wherein: The second valve includes a solenoid valve.

6. A method for controlling a vacuum cleaner, used for the vacuum cleaner according to any one of claims 1 to 5, characterized in that: The following steps are involved: Setting the first fan to an operating state to generate negative pressure at the suction port; After the vacuum chamber is evacuated, the first valve is set to an open state to connect the corresponding vacuum chamber and the dust suction pipe to enhance the negative pressure of the dust suction port.

7. The control method of a vacuum cleaner according to claim 6, characterized in that: A plurality of the second fans are provided in a one-to-one correspondence with the vacuum chambers; After the vacuum chamber is evacuated, the first valve is set to an open state, comprising the following steps: Select the vacuum gear and choose the corresponding number of vacuum chambers according to the vacuum gear; Setting the first valve to a closed state, and then setting the corresponding second blower to an operating state to evacuate the corresponding vacuum chamber; The corresponding first valve is set to an open state.

8. The control method of a vacuum cleaner according to claim 7, characterized in that: A second valve is connected between the second blower and the vacuum chamber; The step sets the first valve to a closed state, and then sets the corresponding second blower to an operating state to evacuate the corresponding vacuum chamber, including the following steps: When the second blower has been running for a preset time, and / or the vacuum chamber has reached a preset pressure, closing the second valve to seal the vacuum chamber; The second fan is set to a shutdown state.

9. The control method of a vacuum cleaner according to claim 6, wherein: A second valve is connected between the second blower and the vacuum chamber; After the first valve is set to an open state in the step to connect the corresponding vacuum chamber and the dust collection pipe, the following steps are also included: The first valve is set to a closed state to seal the vacuum chamber.

10. The control method of a vacuum cleaner according to claim 6, characterized in that: A second valve is connected between the second blower and the vacuum chamber; After the first valve is set to an open state in the step to connect the corresponding vacuum chamber and the dust collection pipe, the following steps are also included: The second valve is set to an open state, and the second fan is set to a running state.

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