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CN-122014561-A - Vacuum pump of breast pump

CN122014561ACN 122014561 ACN122014561 ACN 122014561ACN-122014561-A

Abstract

The embodiment of the invention provides a vacuum pump of a breast pump, which comprises a compression chamber with a compression cavity, an air inlet channel, an air outlet channel, an air inlet control valve, an air outlet channel, an air outlet control valve, a driving component, a return channel and a return channel, wherein the air inlet end and the air outlet end are respectively communicated with a breast sucking module of the breast pump and the compression cavity, the air inlet channel is internally provided with the air inlet control valve, the air inlet end is communicated with the compression cavity, the air outlet channel is internally provided with the air outlet control valve, the driving component is used for promoting the periodical fluctuation of the internal air pressure of the compression cavity, the air inlet control valve and the air outlet control valve are alternately conducted in response to the periodical fluctuation of the internal air pressure to form cyclically alternating air inlet periods and air outlet periods, and the return channel is arranged in parallel with the air inlet control valve and used for enabling part of air in the compression cavity to flow to the direction of the breast sucking module in the air outlet periods. According to the embodiment of the invention, the reflux channel is arranged, and part of air in the compression cavity is refluxed to the direction of the milk sucking module through the reflux channel in the exhaust period, so that the breast is subjected to vibration massage, and the pain of a user can be effectively relieved.

Inventors

  • LI BAIFENG

Assignees

  • 深圳市龙壹科技有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. A vacuum pump for a breast pump, comprising: A compression chamber having a compression chamber therein; The air inlet end and the air outlet end of the air inlet channel are respectively communicated with a milk sucking module of the breast pump, which is covered on the breast and performs sucking action, and the compression cavity, and an air inlet control valve is arranged in the air inlet channel; an exhaust passage, the air inlet end of which is communicated with the compression cavity, an exhaust control valve is arranged in the exhaust passage, and A drive assembly for causing periodic fluctuations in internal air pressure of the compression chamber, the intake control valve and the exhaust control valve alternately conducting in response to the periodic fluctuations in internal air pressure to form cyclically alternating intake cycles and exhaust cycles; The vacuum pump is characterized by further comprising a backflow channel which is arranged in parallel with the air inlet control valve and used for enabling part of air in the compression cavity to flow through and flow back towards the milk sucking module in an exhaust period.
  2. 2. The vacuum pump of a breast pump of claim 1, wherein the air flow rate of the return channel is less than the air flow rate of the exhaust channel during an exhaust cycle.
  3. 3. The vacuum pump of a breast pump of claim 1, wherein the compression chamber comprises a base with two through ends, a cover body covered at one end of the base, and an elastic diaphragm made of elastic material and having a periphery clamped by the base and the cover body, wherein a space between the cover body and the elastic diaphragm forms the compression chamber, and the driving assembly is fixed with the elastic diaphragm to drive the elastic diaphragm to elastically stretch and retract relative to the cover body, so that the volume of the compression chamber correspondingly fluctuates periodically and the internal air pressure correspondingly fluctuates periodically.
  4. 4. A vacuum pump of a breast pump according to claim 3, wherein the cover body is provided with an air inlet nozzle positioned at the air inlet end of the air inlet channel, an air inlet hole correspondingly communicated with the air outlet end of the air inlet channel and the compression cavity, and a reflux hole correspondingly communicated with the reflux channel and the compression cavity, and the air inlet control valve is arranged at the air inlet hole and correspondingly controls the on and off of the air inlet hole.
  5. 5. A vacuum pump of a breast pump according to claim 3, wherein the cover is provided with an exhaust hole which is correspondingly communicated with the exhaust channel, and the exhaust control valve is arranged at the exhaust hole to correspondingly control the connection and the disconnection of the exhaust hole.
  6. 6. The vacuum pump of a breast pump of claim 4, wherein said cover comprises an inner cover and an outer cover, said inner cover and said base cooperate to clamp said elastic diaphragm, said outer cover covers said inner cover on a side remote from said base, said air inlet passage and said return passage are both located between said inner cover and said outer cover, and said air inlet and said return openings are both open in said inner cover.
  7. 7. The vacuum pump of a breast pump of claim 6, wherein adjacent side surfaces of both the inner and outer covers are respectively formed with grooves facing each other, and the intake and return passages are respectively formed by the grooves provided separately on the inner and outer covers being respectively butted with each other in a notch when the outer cover is assembled to the inner cover.
  8. 8. The vacuum pump of claim 6 or 7, further comprising a bottom shell which is in butt joint with one end of the base far away from the cover body and is fixed, wherein the driving component is fixed on the bottom shell, the elastic diaphragm is clamped and fixed by matching an output end with a clamping plate correspondingly arranged on the other opposite side face of the elastic diaphragm, the exhaust channel is formed by sequentially connecting an exhaust hole formed on the clamping plate, an inner cavity of the bottom shell, a first airflow hole formed on the base, a second airflow hole correspondingly formed on the inner cover, an exhaust groove formed on the inner cover and/or the outer cover and an exhaust nozzle formed on the outer cover, the exhaust control valve is arranged at the exhaust hole and correspondingly controls the conduction and the closing of the exhaust hole, and the cover body further comprises a sealing ring which is arranged between the inner cover and the outer cover and correspondingly isolates the air inlet channel and the exhaust channel.
  9. 9. The vacuum pump of claim 1,4 or 5, wherein the intake control valve is a canopy corresponding to a crown located inside the compression chamber and the exhaust control valve is a canopy corresponding to a crown located outside the compression chamber.
  10. 10. A vacuum pump of a breast pump according to claim 3, wherein the drive assembly comprises a motor having a main body located outside the bottom shell and extending into the inner cavity of the bottom shell with an output shaft, an eccentric wheel located in the inner cavity of the bottom shell and fixed on the output shaft of the motor, and a connecting rod having one end sleeved on the eccentric wheel and the other end serving as an output end of the drive assembly for clamping and fixing the elastic diaphragm in cooperation with a clamping plate correspondingly located on the other side face opposite to the elastic diaphragm.

Description

Vacuum pump of breast pump Technical Field The embodiment of the invention relates to the technical field of breast pumps, in particular to a vacuum pump of a breast pump. Background The breast pump promotes milk secretion by simulating the sucking rhythm of infants, can help the mothers in lactation to efficiently express breast milk, and is suitable for occasions such as back milk, outgoing lactation or milk stasis relief in job sites. The existing breast pump mainly adopts a vacuum pump to form negative pressure suction to simulate sucking action of a baby, and can effectively suck breast milk, but the formed negative pressure suction is relatively large and long in duration, so that pain of a user is easy to be aggravated, and user experience is poor. Disclosure of Invention The technical problem to be solved by the embodiment of the invention is to provide the vacuum pump of the breast pump, which can effectively relieve pain of a user. In order to solve the technical problems, the embodiment of the invention firstly provides the following technical scheme that the vacuum pump of the breast pump comprises: A compression chamber having a compression chamber therein; The air inlet end and the air outlet end of the air inlet channel are respectively communicated with a milk sucking module of the breast pump, which is covered on the breast and performs sucking action, and the compression cavity, and an air inlet control valve is arranged in the air inlet channel; the air inlet end of the air exhaust channel is communicated with the compression cavity, and an air exhaust control valve is arranged in the air exhaust channel; A driving assembly for causing periodic fluctuation of internal air pressure of the compression chamber, the intake control valve and the exhaust control valve being alternately turned on in response to the periodic fluctuation of internal air pressure to form cyclically alternating intake cycles and exhaust cycles, and And the backflow channel is arranged in parallel with the air inlet control valve and is used for allowing part of air in the compression cavity to flow through and flow back towards the direction of the milk sucking module in the exhaust period. Further, in the exhaust cycle, the air flow volume of the return passage is smaller than the air flow volume of the exhaust passage. Further, the compression chamber comprises a base with two through ends, a cover body covered at one end of the base and an elastic diaphragm made of elastic materials and clamped by the base and the cover body correspondingly, a space between the cover body and the elastic diaphragm forms a compression cavity, and the driving assembly is fixed with the elastic diaphragm correspondingly to drive the elastic diaphragm to elastically stretch and retract relative to the cover body so that the volume of the compression cavity correspondingly fluctuates periodically to correspondingly form the internal air pressure periodic fluctuation. Further, the cover body is provided with an air inlet nozzle positioned at the air inlet end of the air inlet channel, an air inlet hole correspondingly communicated with the air outlet end of the air inlet channel and the compression cavity, and a reflux hole correspondingly communicated with the reflux channel and the compression cavity, and the air inlet control valve is arranged at the air inlet hole to correspondingly control the conduction and closing of the air inlet hole. Further, the cover body is provided with an exhaust hole which is correspondingly communicated with the exhaust channel, and the exhaust control valve is arranged at the exhaust hole to correspondingly control the conduction and closing of the exhaust hole. Further, the lid includes inner cup and enclosing cover, the inner cup with the base cooperation presss from both sides tightly elastic diaphragm, the enclosing cover in the inner cup is kept away from one side of base, inlet channel with the return channel all is located the inner cup with between the enclosing cover, the inlet port with the return hole all is seted up on the inner cup. Further, grooves facing each other are formed on adjacent side surfaces of the inner cover and the outer cover, respectively, and when the outer cover is assembled to the inner cover, the air inlet channel and the return channel are formed by respectively abutting the grooves respectively arranged on the inner cover and the outer cover in a corresponding way through notches. Further, the vacuum pump further comprises a bottom shell which is in butt joint fixation with one end of the base far away from the cover body, the driving assembly is fixed on the bottom shell, the elastic diaphragm is clamped and fixed by matching an output end with a clamping plate correspondingly arranged on the other side face of the elastic diaphragm, the exhaust channel is formed by sequentially connecting an exhaust hole formed in the clamping plate, an inner cavity of the bottom