Breast pump main machine and breast pump

Abstract

The utility model relates to the technical field of mother and baby products, and provides a breast pump main machine and a breast pump, the breast pump main machine comprises a shell and an air pump, an air valve and a control unit which are arranged in the shell, and the shell is provided with a negative pressure output port; the air valve is connected to the air pump and the negative pressure output port; the control unit is connected with the air pump and used for sending a first control signal to the air pump when the air valve is opened and sending a second control signal to the air pump when the air valve is closed, and the power of the second control signal is smaller than that of the first control signal. According to the utility model, the control unit sends the first control signal to the air pump and the air pump operates normally at a larger first power at the stage that the air valve is opened for exhausting, and the control unit sends the second control signal to the air pump and the air pump operates at a smaller second power at the stage that the air valve is closed for exhausting, so that the problem of current impact caused by frequent start and stop of the air pump is avoided; and the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of maternal and infant products, in particular to a breast pump host and a breast pump. Background Art

[0002] As we all know, a breast pump is a device used to help users discharge breast milk from the breast. Electric breast pumps mainly use a simulation model of a baby sucking breast milk, using negative pressure applied to the human (female) breast, and through the change of air pressure, that is, the cycle of "negative pressure"-"normal pressure", it imitates the action of a baby sucking breast milk.

[0003] In the existing electric breast pump, the air pump needs to be turned on when pumping air, and the air valve generates negative pressure at this time; when the air valve is exhausting, the air pump is not needed to work, and the air pump needs to be turned off at this time.

[0004] However, during the operation of an electric breast pump, the air pump needs to be started and stopped frequently, which will cause current shocks and reduce the service life of the product. Utility Model Content

[0005] The utility model provides a breast pump host and a breast pump, which are used to solve the defects in the prior art that the air pump frequently starts and stops, causing current shock and reducing the service life of the product.

[0006] The utility model provides a breast pump host, comprising:

[0007] A housing having a negative pressure output port;

[0008] An air pump, disposed on the housing;

[0009] An air valve, disposed on the housing, and connected to the air pump and the negative pressure output port;

[0010] A control unit, the control unit is connected to the air pump, the control unit is used to send a first control signal to the air pump when the air valve is opened, and the control unit is used to send a second control signal to the air pump when the air valve is closed, the power of the second control signal is less than the power of the first control signal.

[0011] According to a breast pump host provided by an embodiment of the utility model, the control unit includes:

[0012] A controller, comprising a first control terminal and a second control terminal;

[0013] Two drive circuits, one of which is connected between the first control end and the air pump, and the other of which is connected between the second control end and the air valve.

[0014] According to a breast pump host provided by an embodiment of the utility model, the control unit further comprises a power supply terminal for providing power to the air pump and the air valve.

[0015] According to a breast pump host provided by an embodiment of the utility model, one of the driving circuits includes a driving switch, the driving switch and the air pump are connected in series between the power supply terminal and the ground, and the driving switch is connected to the first control terminal.

[0016] According to a breast pump host provided by an embodiment of the utility model, the driving switch includes a transistor, the gate of the transistor is connected to the first control end, one of the source and the drain of the transistor is connected in series with the air pump, and the other of the source and the drain of the transistor is connected to the power supply end or grounded.

[0017] According to a breast pump host provided by an embodiment of the utility model, the driving circuit further includes a capacitor and a diode, the capacitor and the diode are connected in parallel to two ends of the air pump, and the cathode of the diode is connected to the power supply end.

[0018] According to a breast pump host provided by an embodiment of the utility model, the driving circuit further includes a driving current limiting resistor and / or a driving pull-down resistor;

[0019] The driving current limiting resistor is connected between the gate of the transistor and the first control terminal;

[0020] The driving pull-down resistor is connected between the gate of the transistor and the ground.

[0021] According to a breast pump host provided by an embodiment of the utility model, a battery pack electrically connected to the control unit is provided in the shell, and the shell has a power supply interface electrically connected to the battery pack.

[0022] According to a breast pump host provided by an embodiment of the utility model, the housing is provided with a light-emitting lamp electrically connected to the control unit, and the housing has a light control key electrically connected to the control unit.

[0023] The utility model also provides a breast pump, comprising a feeding bottle, a three-way connection and any one of the above breast pump mainframes;

[0024] The first interface section of the three-way connection is connected to the feeding bottle, and the second interface section of the three-way connection is connected to the negative pressure output port of the breast pump host.

[0025] The breast pump host provided by the embodiment of the utility model, when the air valve is opened for the suction stage, the control unit sends a first control signal to the air pump to make the air pump run normally at a larger first power, and when the air valve is closed for the exhaust stage, the control unit sends a second control signal to the air pump to make the air pump run at a smaller second power, thereby avoiding the current shock problem caused by the frequent start and stop of the air pump, thereby increasing the service life of the product. In addition, during the exhaust stage, the air pump runs at a smaller second power without being shut down, effectively saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is one of the structural schematic diagrams of the breast pump host provided by the embodiment of the utility model;

[0028] Figure 2 This is the second structural diagram of the breast pump host provided by the embodiment of the utility model;

[0029] Figure 3 It is a circuit block diagram of a control unit provided by an embodiment of the utility model;

[0030] Figure 4 It is a circuit block diagram of the air pump driving circuit provided by the embodiment of the utility model;

[0031] Figure 5 It is a circuit block diagram of the gas valve driving circuit provided by the embodiment of the utility model;

[0032] Figure 6 It is a schematic diagram of a first control terminal outputting a first control signal provided by an embodiment of the utility model;

[0033] Figure 7 It is a schematic diagram of a first control terminal outputting a second control signal provided by an embodiment of the utility model;

[0034] Figure 8 It is a schematic diagram of the structure of a breast pump provided by an embodiment of the utility model.

[0035] Reference numerals:

[0036] 100, breast pump host; 200, feeding bottle; 300, three-way connection; 301, silicone diaphragm; 400, connecting tube;

[0037] 110, housing; 111, negative pressure output port; 112, power supply interface;

[0038] 120. Control unit;

[0039] 121. air pump driving circuit; 122. air valve driving circuit; 123. controller; 124. power supply terminal;

[0040] 130. air pump; 131. output port of the air pump;

[0041] 140. air valve; 141. air valve input port; 142. air valve output port;

[0042] 150. Battery pack. DETAILED DESCRIPTION

[0043] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0044] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0046] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] Combine the following Figure 1-Figure 7 The breast pump host according to the embodiment of the utility model is described.

[0049] The embodiment of the first aspect of the utility model provides a breast pump host, such as Figure 1 and Figure 2 As shown, the breast pump host includes a shell 110 and an air pump 130, an air valve 140 and a control unit 120 arranged in the shell 110, the shell 110 has a negative pressure output port 111, the air valve 140 is connected between the air pump 130 and the negative pressure output port 111, the control unit 120 is connected to the air pump 130, the control unit 120 is used to send a first control signal to the air pump 130 when the air valve 140 is opened, and the control unit 120 is used to send a second control signal to the air pump 130 when the air valve 140 is closed, and the power of the second control signal is less than the power of the first control signal.

[0050] It can be understood that the air pump 130 is connected to the air circuit of the air valve 140, and the air pump 130, the air valve 140 and the negative pressure output port 111 are connected in sequence, and the control unit 120 is connected to the air valve 140, and the control unit 120 is used to control the start or stop of the air valve 140.

[0051] The control unit 120 is connected to the air pump 130. During the air extraction stage, the control unit 120 controls the air valve 140 to work, and at the same time, the control unit 120 sends a first control signal to the air pump 130 to make the air pump 130 run at a larger first power. After the air extraction is completed, an exhaust stage is required, and the control unit 120 controls the air valve 140 to close, and at the same time, the control unit 120 sends a second control signal to the air pump 130 to make the air pump 130 continue to run at a smaller second power.

[0052] It is understandable that during the exhaust stage, the air pump 130 continues to operate at a smaller second power, and the air pump 130 does not need to be powered off, thereby avoiding the current shock problem caused by frequent start and stop of the air pump 130, thereby increasing the service life of the product.

[0053] It should be noted that, in order to avoid the current shock caused by frequent start and stop of the air pump 130, if the air pump 130 is always running normally, the air pump 130 will always maintain a high-power operation state, which will cause excessive power consumption, thereby causing energy waste. However, in the exhaust stage, the utility model allows the air pump 130 to operate at a smaller second power under the control of the second control signal, thereby avoiding the current shock caused by frequent start and stop of the air pump 130 and effectively reducing energy consumption.

[0054] The breast pump host provided by the embodiment of the utility model, when the air valve 140 is opened for the suction stage, the control unit 120 sends a first control signal to the air pump 130, so that the air pump 130 operates normally at a larger first power, and when the air valve 140 is closed for the exhaust stage, the control unit 120 sends a second control signal to the air pump 130, so that the air pump 130 operates at a smaller second power, thereby avoiding the current shock problem caused by the frequent start and stop of the air pump 130, thereby improving the service life of the product. In addition, in the exhaust stage, the air pump 130 operates at a smaller second power without being shut down, effectively saving energy consumption.

[0055] According to the breast pump host of the utility model, Figure 1 As shown, the housing 110 includes a lower housing and an upper housing that are interlocked with each other, the air pump 130 and the air valve 140 are both arranged in the lower housing, the air pump 130 is connected to the air valve 140 in an air circuit, the air valve input port 141 is connected to the air pump output port 131, the air valve output port 141 is connected to the negative pressure output port 111 on the housing 110 in an air circuit, the negative pressure output port 111 is connected to one of the ports of the tee 300 through an external connecting pipe 400, and the tee 300 contains a silicone diaphragm 301. In order to show the air pump 130, the air valve 140 and the control unit 120 of the housing 110, Figure 1 Only the lower shell is not shown.

[0056] In one embodiment of the utility model, the control unit 120 includes a controller 123 and two drive circuits, the controller 123 includes a first control end and a second control end; one of the drive circuits is connected between the first control end and the air pump 130, and the other drive circuit is connected between the second control end and the air valve 140.

[0057] It can be understood that the control unit 120 can adopt a control circuit board, which has a suction control circuit, and the suction control circuit is connected to the air pump 130 and the air valve 140 respectively; the control circuit board includes two drive circuits, and the two drive circuits are connected to the controller 123. At the same time, the two drive circuits are connected to the air pump 130 and the air valve 140 respectively.

[0058] For example, Figure 3 As shown, the two driving circuits are respectively an air pump driving circuit 121 and an air valve driving circuit 122, the air pump driving circuit 121 is connected to the air pump 130; the air valve driving circuit 122 is connected to the air valve 140; the controller 123 includes a first control end Pump and a second control end Valve, the first control end Pump is connected to the air pump driving circuit 121, and the second control end Valve is connected to the air valve driving circuit 122.

[0059] After the breast pump main unit is assembled, the controller 123 controls the air pump by controlling the air pump drive circuit 121 to operate, so that the air pump 130 performs the suction process; at the same time, the controller 123 controls the air valve 140 by controlling the air valve drive circuit 122 to operate, so that the air valve 140 realizes the switching function.

[0060] When the user operates the breast pump main unit, turns on the main unit or changes gears, the controller 123 controls the air valve driving circuit 122 to start working according to the signal, so as to control the air valve 140 to open the negative pressure and connect the three-way 300 and the silicone diaphragm 301. At the same time, the first control end Pump sends a first control signal to the air pump 130 to control the air pump driving circuit 121 to start working. When the milk suction end of the three-way 300 is in contact with the breast, the air pump 130 is controlled to operate at a larger first power, so that the silicone diaphragm 301 contracts to extract the air from the three-way 300, so that the air pressure in the breast and the air pressure of the outside atmosphere form an air pressure difference, so that the milk flows out. This process is the air extraction process.

[0061] After the vacuuming process is completed, the second control end Valve controls the air valve driving circuit 122 to start working, to control the air valve 140 to close the connection with the split tee, so that the silicone diaphragm 301 relaxes; at the same time, the first control end Pump sends a second control signal to the air pump 130, controls the air pump driving circuit 121 to control the air pump 130 to operate at a smaller second power. This process is the exhaust process.

[0062] According to an embodiment of the utility model, the control circuit board further includes a power supply terminal 124 (VCC-PUMP), and the power supply terminal 124 is used to provide power to the air pump 130 and the air valve 140.

[0063] The driving circuit includes a driving switch, the driving switch and the air pump 130 (or the air valve 140) are connected in series between the power supply terminal 124 and the ground, and the driving switch is connected to the first control terminal (or the second terminal).

[0064] Furthermore, the driving circuit also includes a capacitor and a diode, which are connected in parallel to two ends of the air pump 130 (or the air valve 140 ), and the cathode of the diode is connected to the power supply terminal 124 .

[0065] Furthermore, the driving switch adopts a transistor, a driving current limiting resistor is connected between the gate of the transistor and the first control terminal, and a driving pull-down resistor is connected between the gate of the transistor and the ground.

[0066] In an optional embodiment of the present invention, Figure 4 As shown, the air pump driving circuit 121 includes an air pump driving switch Q1, a first control terminal Pump is connected to the air pump driving switch Q1, the air pump driving switch Q1 and the air pump 130 are connected in series between the first power supply terminal 124 and the ground, and the controller 123 controls the on and off of the air pump driving switch Q1 to control the air pump 130 to start or stop working. The controller 123 controls the air pump driving switch Q1 to be connected, the air pump 130 is powered on, and starts working; the controller 123 controls the air pump driving switch Q1 to be disconnected, the air pump 130 is powered off, and stops working, so that the controller 123 can control the on and off of the air pump 130 by controlling the on and off of the air pump driving switch Q1, and further can control the air pump 130 to start or stop working. In this embodiment, as Figure 6 As shown, during the air extraction phase, the controller 123 outputs a first control signal with a larger duty cycle from the first control terminal Pump to control the air pump 130, and adjusts the motor speed of the air pump 130 to make it faster, so that the air pump 130 operates at a larger first power. Figure 7 As shown, during the exhaust phase, the controller 123 outputs a second control signal with a smaller duty cycle from the first control terminal Pump to control the air pump 130, adjusts the motor speed of the air pump 130, and makes the speed smaller, so that the air pump 130 continues to operate at a smaller second power and does not shut down without power failure. The air pump drive circuit 121 of this embodiment can achieve high-precision control of the air pump 130.

[0067] For example, the air pump drive switch Q1 can be a first transistor, the gate of the first transistor is connected to the first control terminal Pump, one of the source and the drain of the first transistor is connected in series with the air pump 130, and the other of the source and the drain of the first transistor is connected to the first power supply terminal 124 or grounded.

[0068] Further, the first transistor can be an N-type transistor. The source of the first transistor is grounded, and the drain of the first transistor is connected in series with the air pump 130 to the first power supply terminal 124. When the controller outputs a high level, the first transistor is turned on and the air pump is powered on; when the controller outputs a low level, the first transistor is disconnected and the air pump is powered off. In some other embodiments, the drain of the first transistor can be connected to the first power supply terminal, and the source of the first transistor can be connected in series with the air pump and then grounded. In some other embodiments, the first transistor can also be a P-type transistor. The use of a transistor to control the on and off of the air pump has a faster response speed and can control the air pump more accurately.

[0069] Furthermore, the air pump drive circuit 121 also includes a capacitor C1 and a diode Q11. The air pump 130 is connected in parallel with the capacitor C1 and the diode Q11. The parallel circuit composed of the diode Q11 and the capacitor C1 can prevent the generation of reverse electromotive force from damaging the air pump drive circuit 121, thereby protecting other components in the air pump drive circuit 121 from damage.

[0070] In some embodiments, the air pump driving circuit 121 includes a first driving current limiting resistor R1, which is connected in series between the gate of the first transistor and the first control terminal Pump. The first driving current limiting resistor R1 can limit the current of the first control terminal Pump to prevent the current of the first control terminal Pump from being too large and causing damage to the controller 123.

[0071] In other embodiments, the air pump driving circuit 121 further includes a first driving pull-down resistor R2, which is connected in series between the gate of the first transistor and the ground. When the first transistor is disconnected, the first driving pull-down resistor R2 can pull down the gate voltage of the first transistor to prevent the first transistor from being mis-connected, and the circuit reliability is high.

[0072] In another optional embodiment of the present invention, Figure 5As shown, the gas valve drive circuit 122 includes a gas valve drive switch Q2, the second control terminal Valve is connected to the gas valve drive switch Q2, the gas valve drive switch Q2 and the gas valve 140 are connected in series between the first power supply terminal 124 and the ground, and the controller 123 controls the on and off of the gas valve drive switch Q2 to control the gas valve 140 to start or stop working. In this embodiment, the controller 123 controls the gas valve drive switch Q2 to connect, the gas valve 140 is powered on, starts working, and connects the three-way 300 with the silicone diaphragm 301; the controller 123 controls the gas valve drive switch Q2 to disconnect, the gas valve 140 is powered off, stops working, and separates the connection with the split three-way. The controller 123 can control the on and off of the gas valve 140 by controlling the on and off of the gas valve drive switch Q2, and then can control the gas valve 140 to start working or stop working. The gas valve drive circuit 122 of this embodiment has a simple structure and can achieve high-precision control of the gas valve 140.

[0073] For example, the gas valve drive switch Q2 includes a second transistor, the gate of the second transistor is connected to the second control terminal Valve, one of the source and the drain of the second transistor is connected in series with the gas valve 140, and the other of the source and the drain of the second transistor is connected to the first power supply terminal 124 or grounded.

[0074] Furthermore, the second transistor can also be an N-type transistor. The source of the second transistor is grounded, and the drain of the second transistor is connected in series with the gas valve 140 to the first power supply terminal 124. When the second control terminal Valve of the controller 123 outputs a high level, the second transistor is turned on, and the gas valve 140 is powered on; when the second control terminal Valve of the controller 123 outputs a low level, the second transistor is disconnected, and the gas valve 140 is powered off. In some other embodiments, the drain of the second transistor can also be connected to the first power supply terminal 124, and the source of the second transistor can be connected in series with the gas valve 140 and then grounded. In some other embodiments, the second transistor can also be a P-type transistor. The utility model adopts a transistor to control the on and off of the gas valve 140, has a fast response speed, and can accurately control the gas valve 140.

[0075] Furthermore, the gas valve drive circuit 122 also includes a capacitor C2 and a diode Q21. The gas valve 140 is connected in parallel with the capacitor C2 and the diode Q21. The parallel circuit composed of the diode Q21 and the capacitor C2 can prevent the generation of reverse electromotive force from damaging the gas valve drive circuit 122, thereby protecting other components in the gas valve drive circuit 122 from damage.

[0076] In some embodiments, the gas valve driving circuit 122 further includes a second gas valve current limiting resistor R3, which is connected in series between the gate of the second transistor and the second control terminal Valve. The second gas valve current limiting resistor R3 can limit the current of the second control terminal Valve to prevent the current of the second control terminal Valve from being too large and causing damage to the controller 123.

[0077] In other embodiments, the gas valve driving circuit 122 further includes a second gas valve pull-down resistor R4, which is connected in series between the gate of the second transistor and the ground. When the second transistor is disconnected, the second gas valve pull-down resistor R4 can pull down the gate voltage of the second transistor to prevent the second transistor from being mis-connected, and the circuit reliability is high.

[0078] In one embodiment of the present invention, a battery pack 150 electrically connected to the control unit 120 is disposed in the housing 110 , and the housing 110 has a power supply interface 112 electrically connected to the battery pack 150 .

[0079] It can be understood that there is a battery pack 150 inside the shell 110, and the battery pack 150 is used to power the control unit 120. The battery pack 150 can be charged through the power supply interface 112 on the shell 110, so that when the power is off, the battery pack 150 provides power, so that the breast pump host can work normally when the power is off.

[0080] Furthermore, the housing 110 is equipped with a light-emitting lamp electrically connected to the control unit 120 , and the housing 110 has a light-control key electrically connected to the control unit 120 , and the light-emitting lamp on the housing 110 is turned on by the light-control key to provide a lighting function.

[0081] The embodiment of the second aspect of the utility model provides a breast pump, Figure 8 The schematic diagram of the structure of the breast pump provided by the embodiment of the utility model is illustrated as follows: Figure 8 As shown, the breast pump includes a milk bottle 200, a tee 300 and a breast pump host 100 provided in any of the above embodiments, the first interface section of the tee 300 is connected to the milk bottle 200, and the second interface section of the tee 300 is connected to the negative pressure output port 111 of the breast pump host 100.

[0082] It can be understood that the tee 300 has three interfaces, namely the first interface, the second interface and the third interface. The first interface is connected to the milk bottle 200, the second interface has a silicone diaphragm 301, the second interface is connected to the negative pressure output port 111 of the breast pump host 100 through the connecting tube 400, and the third interface is used as a milk suction end and is used to fit the mother's breast. In this embodiment, the tee 300 can be a split tee.

[0083] For example, the user operates the main unit to turn on the main unit, and the second control end Valve of the controller 123 controls the air valve driving circuit 122 to start working, so as to control the air valve 140 to open the connection between the negative pressure and the split tee and the silicone diaphragm 301. At the same time, the controller 123 controls the air pump 130 to continue to operate at a larger first power. When the milk suction end is in contact with the breast, the air pump 130 causes the silicone diaphragm 301 to contract and extract the air from the split tee, so that the air pressure in the breast and the air pressure of the outside atmosphere form an air pressure difference, thereby causing milk to flow out. This process is the air extraction process. After the air extraction process is completed, the controller 123 controls the air valve 140 to close the connection with the split tee and the silicone diaphragm 301, so that the silicone diaphragm 301 is relaxed to perform the exhaust process. At the same time, the controller 123 controls the air pump 130 to continue to operate at a smaller second power.

[0084] The breast pump provided by the embodiment of the utility model controls the suction parameters of the air pump 130 and the air valve 140 so that the air pump 130 is in an open state with a relatively low power (the second power) when the air valve 140 is exhausted, and returns to a high power (the first power, i.e., the normal power) working state when exhausting air. This prevents current shocks and reduces the service life of the air pump 130 due to frequent starts and stops of the air pump 130, and also prevents unnecessary power consumption due to the air pump 130 always running at a high power.

[0085] In a specific embodiment of the present invention, the working process of the breast pump is as follows:

[0086] In the air extraction stage, the controller 123 controls the air pump drive switch Q1 to be connected, and the air pump 130 is powered on to start working. Figure 6 As shown, in the suction stage, the controller 123 outputs a first control signal with a large duty cycle from the first control end Pump to control the air pump 130, adjusts the motor speed of the air pump 130, and makes it rotate at a large speed, so that the air pump 130 operates at a large first power. At the same time, the controller 123 controls the air valve drive switch Q2 to be connected, and the air valve 140 is energized to start working. The negative pressure first passes through the output port of the air pump 130 and is connected to the input port 141 of the air valve. The output port 141 of the air valve is connected to the negative pressure output port 111 of the housing 110. The negative pressure output port 111 is connected to the connecting pipe 400, and the connecting pipe 400 is connected to the split tee, and the split tee contains a silicone diaphragm 301. The silicone diaphragm 301 is controlled by the negative pressure of the air pump 130 to shrink, so that negative pressure is formed inside the breast. This process is the suction process.

[0087] After the air extraction phase is completed, the exhaust phase is required. At this time, the controller 123 outputs a control signal from the second control terminal Valve to close the air valve 140, stop the air extraction, and the silicone diaphragm 301 contained in the split tee returns to the expanded state. Figure 7As shown, at the same time, the controller 123 outputs a second control signal with a smaller duty cycle from the first control terminal Pump to control the air pump 130, adjust the motor speed of the air pump 130, and reduce its speed, so that the air pump 130 continues to run at a smaller second power and does not shut down without power failure.

[0088] The controller 123 controls the exhaust and then performs the suction process again. At this time, the controller 123 again gives the air pump 130 a larger first power to suction air, and the air valve 140 is opened again, and the above-mentioned suction process and exhaust process are repeated to complete the breast pumping process.

[0089] In the breast pump provided by the embodiment of the utility model, during the exhaust stage when the air valve 140 is closed, the control unit 120 sends a second control signal to the air pump 130 to make the air pump 130 operate at a smaller second power, thereby ensuring that the air pump 130 is not affected by the current shock. Under this premise, the exhaust process realizes a "low power consumption" working mode, thereby ensuring the service life of the product and reducing power consumption.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A breast pump host, characterized in that: include: A housing having a negative pressure output port; An air pump, disposed on the housing; An air valve, disposed on the housing, and connected to the air pump and the negative pressure output port; A control unit, the control unit is connected to the air pump, the control unit is used to send a first control signal to the air pump when the air valve is opened, and the control unit is used to send a second control signal to the air pump when the air valve is closed, the power of the second control signal is less than the power of the first control signal.

2. The breast pump host according to claim 1, characterized in that: The control unit comprises: A controller, comprising a first control terminal and a second control terminal; Two drive circuits, one of which is connected between the first control end and the air pump, and the other of which is connected between the second control end and the air valve.

3. The breast pump host according to claim 2, characterized in that: The control unit also includes a power supply terminal for providing power to the air pump and the air valve.

4. The breast pump host according to claim 3, characterized in that: One of the driving circuits includes a driving switch, the driving switch and the air pump are connected in series between the power supply terminal and the ground, and the driving switch is connected to the first control terminal.

5. The breast pump host according to claim 4, characterized in that: The driving switch includes a transistor, a gate of the transistor is connected to the first control end, one of the source and the drain of the transistor is connected in series with the air pump, and the other of the source and the drain of the transistor is connected to the power supply end or grounded.

6. The breast pump host according to claim 4, characterized in that: The driving circuit further includes a capacitor and a diode, wherein the capacitor and the diode are connected in parallel to two ends of the air pump, and a cathode of the diode is connected to the power supply end.

7. The breast pump host according to claim 5, characterized in that: The driving circuit also includes a driving current limiting resistor and / or a driving pull-down resistor; The driving current limiting resistor is connected between the gate of the transistor and the first control terminal; The driving pull-down resistor is connected between the gate of the transistor and the ground.

8. The breast pump host according to any one of claims 1 to 7, characterized in that: The shell has a battery pack electrically connected to the control unit, and the shell has a power supply interface electrically connected to the battery pack.

9. The breast pump host according to any one of claims 1 to 7, characterized in that: The housing is provided with a light-emitting lamp electrically connected to the control unit, and the housing has a light-control key electrically connected to the control unit.

10. A breast pump, characterized in that: It comprises a feeding bottle, a tee and a breast pump host as claimed in any one of claims 1 to 9; The first interface section of the three-way connection is connected to the feeding bottle, and the second interface section of the three-way connection is connected to the negative pressure output port of the breast pump host.

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