Silent air pump

Abstract

This utility model discloses a silent air pump, which includes a pump body, a main air pump, a make-up air pump, a control circuit board, and a sound insulation component disposed within the pump body. The pump body has a detection port, a main air port connected to the main air pump, and a make-up air port connected to the make-up air pump. The control circuit board is equipped with a pressure sensor for detecting the pressure at the detection port, and the control circuit board is electrically connected to the main air pump and the make-up air pump respectively. The sound insulation component includes a sound insulation box and at least one piece of sound insulation cotton disposed within the sound insulation box. The make-up air pump is housed in the sound insulation box and covered by the sound insulation cotton. This utility model can effectively reduce noise during air replenishment.

Description

Technical Field

[0001] This utility model relates to the field of air pumps, and in particular to a silent air pump. Background Technology

[0002] Many existing inflatable products (such as air mattresses and air tents) are equipped with air pumps to inflate them. At least one air pump is set up to inflate the product, and some air pumps also have a supplementary air pump to replenish the air. After the product is inflated, if the internal pressure drops below the set pressure value, the supplementary air pump will work to inflate the product. However, the supplementary air pump will generate noise when it is working. If the supplementary air pump is working while people are resting on the inflatable product, the noise generated by the supplementary air pump will greatly affect their rest.

[0003] In view of the above problems, it is necessary to study a silent air pump that can effectively reduce noise during air replenishment. Utility Model Content

[0004] The purpose of this invention is to provide a silent air pump that can effectively reduce noise during air replenishment.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A silent air pump includes a pump body, a main air pump, a make-up air pump, a control circuit board, and a sound insulation component disposed within the pump body. The pump body has a detection port, a main air port connected to the main air pump, and a make-up air port connected to the make-up air pump. The control circuit board is equipped with a pressure sensor for detecting the pressure at the detection port. The control circuit board is electrically connected to the main air pump and the make-up air pump respectively. The sound insulation component includes a sound insulation box and at least one piece of sound insulation cotton disposed within the sound insulation box. The make-up air pump is housed in the sound insulation box and covered by the sound insulation cotton.

[0007] The soundproof box is installed in the pump body via shock-absorbing feet, which are elastic.

[0008] The air inlet is equipped with sound-absorbing cotton and a sound-absorbing cover.

[0009] The outlet of the air pump is connected to the air inlet via an air supply pipe. The air supply pipe is equipped with an air supply check valve, which controls the gas to flow out of the air inlet in one direction.

[0010] The detection port is connected to a detection tube, one end of which is connected to the detection port, and the other end of which is connected to a pressure sensor.

[0011] The pump body is equipped with a control panel, which is electrically connected to the control circuit board.

[0012] The silent air pump also includes a charging / discharging switching device installed in the pump body. The main air pump has an air inlet and an air outlet, and the air inlet and air outlet of the main air pump are matched with the main air inlet through the charging / discharging switching device.

[0013] The inflation / deflation switching device includes a switching disc, a switching motor, and a control switch for starting the main air pump. The switching motor and the control switch are electrically connected to the control circuit board. The switching disc is slidably engaged with the main air pump. The switching disc can voluntarily close the main air port and press the control switch. The switching disc is provided with a first air port, a second air port, and a third air port for connecting the inner cavity of the pump body and the main air port.

[0014] The first and third vents of the switching disk penetrate vertically through the two end faces of the switching disk. The two openings of the second vent of the switching disk are located on one end face and one side face of the switching disk, respectively. The second vent is located between the first and third vents, and the switching disk partially closes the main vent corresponding to the second vent.

[0015] The switching disk is equipped with a switching rack, and the output shaft of the switching motor is connected to a switching gear, which meshes with the switching rack.

[0016] After adopting the above solution, this utility model has the following characteristics:

[0017] 1. The noise generated by the air pump during operation can be isolated by sound insulation cotton, reducing the outward transmission of the noise generated by the air pump during operation, thereby effectively reducing the noise during air replenishment.

[0018] 2. When the air pump is working, the shock-absorbing feet of this utility model can absorb the vibration generated by the soundproof box, reduce the noise generated by the vibration of the soundproof box, and thus effectively reduce the noise during air replenishment.

[0019] 3. When the air pump is working and replenishes air into the inflatable product through the air inlet, the sound-absorbing cotton and the sound-absorbing cover can absorb the noise generated by the gas flow, thereby effectively reducing the noise during air replenishment. Attached Figure Description

[0020] Figure 1 This is an exploded view of the structure of this utility model.

[0021] Figure 2 This is a partial structural schematic diagram of the present invention.

[0022] Figure 3 This is a schematic diagram of the present invention when the switching disk is moved to the closed position. Figure 1 .

[0023] Figure 4 This is a schematic diagram of the present invention when the switching disk is moved to the closed position. Figure 2 .

[0024] Figure 5 This is a schematic diagram of the present invention when the switching disc is moved to the inflation position. Figure 1 .

[0025] Figure 6 This is a schematic diagram of the present invention when the switching disc is moved to the inflation position. Figure 2 .

[0026] Figure 7 This is a schematic diagram of the present invention when the switching disc is moved to the venting position. Figure 1 .

[0027] Figure 8 This is a schematic diagram of the present invention when the switching disc is moved to the venting position. Figure 2 .

[0028] Label Explanation:

[0029] 1. Pump body; 11. Inspection port; 12. Main air port; 13. Make-up air port; 14. Control panel; 15. Sound-absorbing cotton; 16. Soundproof cover; 17. Vent.

[0030] Main air pump 2, pump body chamber 20, pump cover 21, pump base 22, connecting cover 23, air inlet 231, air outlet 232, impeller 24, air pump motor 25.

[0031] Air pump 3,

[0032] Control circuit board 4,

[0033] Sound insulation component 5, sound insulation box 51, upper box 511, lower box 512, sound insulation cotton 52, shock-absorbing feet 53

[0034] Air supply pipe 6, air supply check valve 61,

[0035] Detection tube 7,

[0036] The inflation / deflation switching device 8 includes a switching disc 81, a first vent 811, a second vent 812, a third vent 813, a switching rack 814, a switching motor 82, a control switch 83, and a switching gear 84. Detailed Implementation

[0037] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0038] like Figures 1 to 8As shown, this utility model discloses a silent air pump, including a pump body 1, a main air pump 2, a replenishing air pump 3, and a control circuit board 4 disposed in the pump body 1. The pump body 1 is provided with a detection port 11, a main air port 12 connected to the main air pump 2, and a replenishing air port 13 connected to the replenishing air pump 3. The control circuit board 4 is equipped with a pressure sensor for detecting the pressure of the detection port 11. The control circuit board 4 is electrically connected to the main air pump 2 and the replenishing air pump 3 respectively. The main air pump 2 is used to inflate the inflatable product, and the replenishing air pump 3 is used to replenish the inflatable product.

[0039] In an embodiment of this utility model, the silent air pump further includes a sound insulation component 5 disposed in the pump body 1; the sound insulation component 5 includes a sound insulation box 51 and at least one piece of sound insulation cotton 52 disposed in the sound insulation box 51; the air replenishment pump 3 is housed in the sound insulation box 51 and covered by the sound insulation cotton 52; this arrangement of the utility model ensures that the noise generated by the air replenishment pump 3 during operation is isolated by the sound insulation cotton 52, reducing the outward propagation of the noise generated by the air replenishment pump 3 during operation, thereby effectively reducing the noise during air replenishment.

[0040] In an embodiment of this utility model, the soundproof box 51 can be installed in the pump body 1 via shock-absorbing feet 53. The shock-absorbing feet 53 are elastic, and when the air replenishment pump 3 is working, the shock-absorbing feet 53 can absorb the vibration generated by the soundproof box 51, reducing the noise generated by the vibration of the soundproof box 51, thereby effectively reducing the noise during air replenishment. The soundproof box 51 may include an upper box body 511 and a lower box body 512 connected together, which facilitates the installation of the air replenishment pump 3 and the sound insulation cotton 52.

[0041] In this embodiment of the invention, the outlet of the air pump 3 is connected to the air inlet 13 via the air supply pipe 6. The air supply pipe 6 is equipped with an air supply check valve 61, which controls the unidirectional flow of gas out of the air inlet 13. This arrangement prevents the inflated product from leaking air through the air pump 3. The air inlet 13 is equipped with sound-absorbing cotton 15 and a sound-absorbing cover 16. When the air pump 3 operates and supplies air to the inflated product through the air inlet 13, the sound-absorbing cotton 15 and the sound-absorbing cover 16 can absorb the noise generated by the gas flow, thereby effectively reducing the noise during air supply. The sound-absorbing cotton 15 can be housed in the air inlet 13, and the sound-absorbing cover 16 is connected to the air inlet 13 and covers the sound-absorbing cotton 15.

[0042] In an embodiment of this utility model, the detection port 11 may be connected to a detection tube 7. One end of the detection tube 7 is connected to the detection port 11, and the other end of the detection tube 7 is connected to a pressure sensor, so that the pressure of the detection port 11 can be applied to the pressure sensor through the detection tube 7. Both the detection tube 7 and the air supply tube 6 can be flexible hoses, which facilitates the installation of the detection tube 7 and the air supply tube 6.

[0043] In an embodiment of this utility model, the main air pump 2 may include a pump cover 21, a pump base 22, a connecting cover 23, an impeller 24, and an air pump motor 25. The pump cover 21, the pump base 22, and the connecting cover 23 are connected in sequence, and a pump body chamber 20 is formed between the pump cover 21 and the pump base 22. The connecting cover 23 is provided with an air inlet 231 and an air outlet 232 that communicate with the pump body chamber 20. The impeller 24 is rotatably disposed in the pump body chamber 20. The air pump motor 25 is installed on the pump cover 21 and the output shaft of the air pump motor 25 is connected to the impeller 24. The air pump motor 25 is electrically connected to the control circuit board 4.

[0044] In an embodiment of this utility model, the silent air pump of this utility model further includes an inflation / deflation switching device 8 disposed in the pump body 1. The main air pump 2 is provided with an air inlet 231 and an air outlet 232. The air inlet 231 and the air outlet 232 of the main air pump 2 cooperate with the main air inlet 12 through the inflation / deflation switching device 8, so that this utility model can inflate and deflate the inflatable product through the main air pump 2 and the inflation / deflation switching device 8. The inflation / deflation switching device 8 may include a switching disk 81, a switching motor 82, and a control switch 83 for starting the main air pump 2. The switching motor 82 and the control switch 83 are electrically connected to the control circuit board 4. The switching disk 81 is slidably engaged with the main air pump 2. The switching disk 81 can movably close the main air port 12 and can also movably press the control switch 83. The switching disk 81 is provided with a first air port 811, a second air port 812, and a third air port 813 for connecting the inner cavity of the pump body 1 and the main air port 12. The first air port 811 and the third air port 813 can vertically penetrate the two end faces of the switching disk 81. The two openings of the second vent 812 are respectively located on one end face and one side face of the switching disk 81, and the second vent 812 is located between the first vent 811 and the third vent 813. The part of the switching disk 81 corresponding to the second vent 812 is movably closed to the main vent 12. The switching disk 81 may be provided with a switching rack 814. The output shaft of the switching motor 82 is connected to a switching gear 84. The switching gear 84 meshes with the switching rack 814 so that the switching motor 82 can drive the switching disk 81 to move. The pump body 1 may be provided with a vent 17 so that the inner cavity of the pump body 1 communicates with the outside.

[0045] In an embodiment of this utility model, the pump body 1 may be provided with a control panel 14, which is electrically connected to the control circuit board 4. The user can control the control circuit board 4 through the control circuit board 4, so that the silent air pump of this utility model can inflate, deflate, stop inflating and automatically replenish air.

[0046] Cooperate Figures 3 to 8 As shown, the working principle of this utility model will be described in detail below.

[0047] When the silent air pump of this utility model is inflating, the main control circuit board controls the switching motor 82 to drive the switching disk 81 to move forward. When the switching disk 81 moves to the inflation position, the main control circuit board controls the switching motor 82 to stop driving the switching disk 81 to move. At this time, the first air port 811 is connected to the air outlet 232 and the main air port 12 of the main air pump 2, and the second air port 812 is connected to the air inlet 231 and the inner cavity of the pump body 1 of the main air pump 2. At this time, the switching disk 81 releases the pressure on the control switch 83 and controls the air pump motor 25 to work. In this way, the main air pump 2 inputs the air in the inner cavity of the pump body 1 into the inflatable product through the main air port 12 for inflation. When the pressure sensor of the control circuit board 4 detects that the pressure at the detection port 11 has reached the set pressure value, the main control circuit board controls the switching motor 82 to drive the switching disk 81 to move in the reverse direction to the closed position, so that the switching disk 81 presses the control switch 83 and controls the air pump motor 25 of the main air pump 2 to stop working. At this time, the main control circuit board controls the switching motor 82 to stop driving the switching disk 81 to move, and the switching disk 81 closes the main air port 12.

[0048] When the silent air pump of this invention deflates, the switching motor 82 first drives the switching disk 81 to move in the reverse direction. When the switching disk 81 moves to the deflation position, the switching motor 82 stops driving the switching disk 81 to move. At this time, the third air port 813 is connected to the air inlet 231 and the main air port 12 of the main air pump 2, and the second air port 812 is connected to the air outlet 232 and the inner cavity of the pump body 1 of the main air pump 2. At this time, the switching disk 81 releases the pressure on the control switch 83 and controls the air pump motor 25 to work. In this way, the main air pump 2 draws the air inside the inflated product into the inner cavity of the pump body 1. After deflation is completed, the control circuit board 4 can control the switching motor 82 to first drive the switching disk 81 to move forward to the closed position, so that the switching disk 81 presses the control switch 83 and controls the air pump motor 25 of the main air pump 2 to stop working. At this time, the main control circuit board controls the switching motor 82 to stop driving the switching disk 81 to move, and the switching disk 81 closes the main air port 12.

[0049] After the silent air pump of this utility model completes the inflation of the inflatable product, the pressure sensor of the control circuit board 4 detects the pressure of the detection port 11 in real time (i.e., detects the internal pressure of the inflatable product in real time). When the pressure of the detection port 11 is lower than the set pressure value, the control circuit board 4 controls the air replenishment pump 3 to work and replenish the inflatable product. When the inflatable product is replenished to the pressure of the detection port 11 reaches the set pressure value, the control circuit board 4 controls the air replenishment pump 3 to stop working.

[0050] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A mute air pump, comprising a pump body, a main air pump, a supplementary air pump and a control circuit board arranged in the pump body, the pump body being provided with a detection port, a main air port connected with the main air pump and a supplementary air port connected with the supplementary air pump, the control circuit board being matched with a pressure sensor for detecting the pressure of the detection port, and the control circuit board being electrically connected with the main air pump and the supplementary air pump respectively; characterized in that: This also includes installing sound insulation components in the pump body; The sound insulation component includes a sound insulation box and at least one piece of sound insulation cotton disposed in the sound insulation box; the air supply pump is housed in the sound insulation box and covered by the sound insulation cotton.

2. The silent air pump as described in claim 1, characterized in that: The soundproof box is installed in the pump body via shock-absorbing feet, which are elastic.

3. The silent air pump as described in claim 1, characterized in that: The air inlet is equipped with sound-absorbing cotton and a sound-absorbing cover.

4. The silent air pump as described in claim 1, characterized in that: The outlet of the air pump is connected to the air inlet via an air supply pipe. The air supply pipe is equipped with an air supply check valve, which controls the gas to flow out of the air inlet in one direction.

5. The silent air pump as described in claim 1, characterized in that: The detection port is connected to a detection tube, one end of which is connected to the detection port, and the other end of which is connected to a pressure sensor.

6. The silent air pump as described in claim 1, characterized in that: The pump body is equipped with a control panel, which is electrically connected to the control circuit board.

7. The silent air pump as described in claim 1, characterized in that: It also includes a charging / discharging switching device installed in the pump body. The main air pump has an air inlet and an air outlet, and the air inlet and air outlet of the main air pump are matched with the main air inlet through the charging / discharging switching device.

8. The silent air pump as described in claim 7, characterized in that: The inflation / deflation switching device includes a switching disc, a switching motor, and a control switch for starting the main air pump. The switching motor and the control switch are electrically connected to the control circuit board. The switching disc is slidably engaged with the main air pump. The switching disc can voluntarily close the main air port and press the control switch. The switching disc is provided with a first air port, a second air port, and a third air port for connecting the inner cavity of the pump body and the main air port.

9. The silent air pump as described in claim 8, characterized in that: The first and third vents of the switching disk penetrate vertically through the two end faces of the switching disk. The two openings of the second vent of the switching disk are located on one end face and one side face of the switching disk, respectively. The second vent is located between the first and third vents, and the switching disk partially closes the main vent corresponding to the second vent.

10. The silent air pump as described in claim 8, characterized in that: The switching disk is equipped with a switching rack, and the output shaft of the switching motor is connected to a switching gear, which meshes with the switching rack.

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