Multi-pressure integrated air pump

Patent metadata

Field	Value
Publication number	US-12448958-B2
Application number	US-202318200650-A
Country	US
Kind code	B2
Filing date	May 23, 2023
Priority date	Jul 2, 2019
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

A high and low-pressure integrated air pump includes a single housing including an air inlet and an air outlet. A high-pressure pump is disposed within the housing and in fluid communication with the air inlet, and uses a first outlet passage to discharge to the air outlet. A low-pressure pump is also disposed within the housing and in fluid communication with the air inlet, and uses a second outlet passage to discharge to the air outlet.

First claim

What is claimed is:

1. A high and low-pressure integrated air pump, comprising:
a housing including an air inlet and an air outlet;
a high-pressure pump disposed within the housing in fluid communication with the air inlet and the air outlet;
a first high-pressure check valve separating the high-pressure pump from the air inlet;
a low-pressure pump disposed within the housing and in fluid communication with the air inlet and the air outlet;
a first low-pressure check valve separating the low-pressure pump from the air outlet; a flow path defined between the first low-pressure check valve and the air outlet which bypasses the high-pressure pump; and
a second high-pressure check valve separating the high-pressure pump from the low-pressure pump.

2. The high and low-pressure integrated air pump of claim 1 , wherein the housing includes an exhaust.

3. The high and low-pressure integrated air pump of claim 1 , wherein the housing includes a retainer for supporting and mounting of at least a portion of the low-pressure pump, and at least one support for supporting and mounting of at least a portion of the high-pressure pump.

4. The high and low-pressure integrated air pump of claim 1 , wherein: the low-pressure pump is disposed between the high-pressure pump and the air inlet, and the first high-pressure check valve is disposed between the high-pressure pump and the low-pressure pump.

5. The high and low-pressure integrated air pump of claim 1 , wherein the high-pressure pump is a positive displacement pump.

6. The high and low-pressure integrated air pump of claim 5 , wherein the positive displacement pump includes a motor and a connecting rod.

7. The high and low-pressure integrated air pump of claim 6 , wherein the connecting rod is configured to reciprocate when the motor is operating.

8. The high and low-pressure integrated air pump of claim 7 , wherein the motor is configured to generate motion about an axis, and wherein the connecting rod is coupled at a location offset from the axis.

9. The high and low-pressure integrated air pump of claim 5 , wherein the positive displacement pump includes a mechanical member configured to reciprocate to provide mechanical energy to pressurize air provided through the first high-pressure check valve.

10. The high and low-pressure integrated air pump of claim 9 , which further includes a working fluid chamber located between the first high-pressure check valve and the second high-pressure check valve, wherein the mechanical member defines the working fluid chamber.

11. The high and low-pressure integrated air pump of claim 1 , which further includes a controller configured to receive an electrical signal indicative of a pressure condition.

12. The high and low-pressure integrated air pump of claim 1 , which further includes a pressure sensor structured to react to the pressure condition, the pressure sensor configured to provide the electrical signal indicative of the pressure condition.

Assignees

• Intex Marketing Ltd

Inventors

• Huang zhi xiong
• Zhang Ying Biao
• Lin zheng wen

Classifications

• F04B23/08

  the pumps being of different types · CPC title

• F04B23/06

  the pumps being all of reciprocating positive-displacement type · CPC title

• F04D29/503

  especially adapted for elastic fluid pumps · CPC title

• F04D27/005

  by changing flow path between different stages or between a plurality of compressors; Load distribution between compressors · CPC title

• F04D17/16

  for displacing without appreciable compression · CPC title