Electromagnetic vibrating type diaphragm pump

• US 7,661,933 B2
• Filed: 01/22/2003
• Issued: 02/16/2010
• Est. Priority Date: 04/08/2002
• Status: Active Grant

• Current Assignee: Techno Takatsuki Co., Ltd.
• Original Assignee: Techno Takatsuki Co., Ltd.
• Inventors: Komuro, Hirokazu, Ohya, Ikuo
• Primary Examiner(s): Kramer; Devon C
• Assistant Examiner(s): Bayou; Amene S
• Application Number:
  US10/510,575
• Publication Number:
  US 20050254971A1
• Time in Patent Office: 2,582 Days
• Field of Search: 417/246, 417/341, 417/342, 417/343, 417/522, 417/524, 417/534, 417/535, 417/413.1, 417/254, 417/257, 417/265, 417/266, 417/267, 417/268, 417/418, 417/244, 417/248, 417/250, 417/251, 417/258, 310/14, 310/24, 92/48, 92/49, 92/50
• US Class Current: 417/413.1
• CPC Class Codes: F04B 45/043 two or more plate-like pumping flexible members in parallel
• CPC Class Codes: F04B 45/047 Pumps having electric drive

Abstract

An electromagnetic vibrational diaphragm pump comprising an electromagnet portion having an electromagnet arranged in a frame, a vibrator which is supported in the electromagnet portion and equipped with a magnet, diaphragms with a large diameter and diaphragms with a small diameter which are successively connected with both ends of the vibrator, and the pump casing portions of the diaphragms with a large diameter and diaphragms with a small diameter which are fixed on the both end portions of the electromagnet portion, wherein the left and right pump casing portions have pump chambers respectively corresponding to the diaphragms with a large diameter and diaphragms with a small diameter. Medium pressure (about 50 to 200 kPa) can be generated.

Claims

1. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame, the electromagnet portion having left and right end portions;

a vibrator supported in said electromagnet portion and equipped with magnets, the vibrator having left and right ends;

left and right diaphragms with a large diameter and left and right diaphragms with a small diameter successively connected with respective ones of both the left and right ends of said vibrator;

left and right pump casing portions of said diaphragms with a large diameter and diaphragms with a small diameter fixed on respective ones of the left and right end portions of said electromagnet portion, said left and right pump casing portions including left and right pump chambers respectively corresponding to the diaphragms with a large diameter and diaphragms with a small diameter;

wherein by conducting low pressure air generated in the pump chamber of the left diaphragm with a large diameter to the pump chamber of the right diaphragm with a small diameter and conducting low pressure air generated in the pump chamber of the right diaphragm with a large diameter to the pump chamber of the left diaphragm with a small diameter, an air circuit of the pump has two air circuits each with two compression steps in series for compressing so that medium pressure air of about 50 to 200 kPa is generated by pumping action.

3. The electromagnetic diaphragm pump of claim 1 or 2, wherein said frame is a resin molded article molded on an outer surface of said electromagnet, the resin molded article being formed with a first tank portion for vent and a second tank portion for vent which are connected with the left and right pump chambers and linked with a suction portion and a discharge portion, and the resin molded article having ring shape grooves to which said diaphragms with a large diameter are installed.

4. The electromagnetic vibrational diaphragm pump of claim 1 or 2 further comprising vent pipes connecting said left and right pump chambers with each other.

5. The electromagnetic vibrational diaphragm pump of claim 1 or 2, wherein said frame is a resin molded article molded on an outer surface of said electromagnet, the resin molded article being formed with a first tank portion for vent and a second tank portion for vent which are connected with the left and right pump chambers and linked with a suction portion and a discharge portion, the resin molded article having ring shape grooves to which said diaphragms with a large diameter are installed and wherein a suction chamber and the first tank portion for vent and a discharge chamber and the second tank portion for vent which are connected with the pump chambers of the pump casing portions for said left and right diaphragms with a large diameter are linked with passages which are formed on the frame and the pump casing portions for the diaphragms with a large diameter, and wherein a discharge chamber and the first tank portion for vent and a suction chamber and the second tank portion for vent which are connected with the pump chambers of pump casing portions said left and right diaphragms with a small diameter are linked with passages which are formed on the pump casing portions for the diaphragms with a large diameter and the diaphragms with a small diameter.

6. The electromagnetic vibrational diaphragm pump of claim 3 further comprising said first tank portion for vent being separated by a partition portion.

7. The electromagnetic vibrational diaphragm pump of claim 3, wherein linking holes which are linked with hermetic space which is hermetically sealed by the fore-mentioned electromagnet portion and the diaphragms with a large diameter are formed on the fore-mentioned second tank portion for vent, and pressure which was generated in the fore-mentioned diaphragms with a large diameter is applied as back pressure on said diaphragms with a large diameter.

8. The electromagnetic vibrational diaphragms pump of claim 1 or 2, equipped with at least 2 of the pump portions of the diaphragms with a small diameter in said left and right pump casing portions, and being multi-step compression.

9. The electromagnetic vibrational diaphragm pump of claim 1 or 2, wherein an outer dimension of the pump casing portions for the diaphragms with a large diameter and an outer dimension of the pump casing portions for the diaphragms with a small diameter are substantially the same.

10. The electromagnetic vibrational diaphragm pump of claim 9, wherein suction chambers and discharge chambers which are formed on said pump casing portions for said diaphragms with a large diameter and said pump casing portions for said diaphragms with a small diameter are arranged at a side-face side to a lateral direction of the pump chambers.

11. The electromagnetic vibrational diaphragm pump of claim 9, wherein said frame is a resin molded article molded on an outer surface of said electromagnet, the resin molded article being formed with a first tank portion for vent and a second tank portion for vent which are connected with the left and right pump chambers and linked with a suction portion and a discharge portion, the resin molded article having ring shape grooves to which said diaphragms with a large diameter are installed, and wherein a suction chamber and the first tank portion for vent and a discharge chamber and the second tank portion for vent which are connected with the pump chambers of pump casing portions for said left and right diaphragms with a large diameter are linked with passages which are formed on the frame and the pump casing portions for the diaphragms with a large diameter, and wherein a discharge chamber and the first tank portion for vent and a suction chamber and the second tank portion for vent which are connected with the um chambers of um casing portions for said left and right diaphragms with a small diameter are linked with passages which are formed on the pump casing portions for the diaphragms with a large diameter and the diaphragms with a small diameter.

12. The electromagnetic vibrational diaphragm pump of claim 9, wherein said magnets have a convex shape.

13. The electromagnetic vibrational diaphragm pump of claim 9, wherein the shape of a bottom portion of the pump chambers of the pump casing portions for said diaphragms with a large diameter and the pump casing portions for the diaphragms with a small diameter is a cone shape or a semispherical shape.

14. The electromagnetic vibrational diaphragm pump of claim 11, further comprising side plates which are arranged on a side face of said pump casing portions for the diaphragms with a small diameter, said side plates having legs for installation.

21. The electromagnetic vibrational diaphragm pump of claim 1, 2, 15 or 16, wherein said electromagnet includes iron cores having an inner peripheral concave portion and winding coil portions which are assembled in the inner peripheral concave portion of said iron cores.

22. The electromagnetic vibrational diaphragm pump of claim 1, 2, 15 or 16, wherein said electromagnet includes a pair of iron cores with a small diameter, a pair of iron cores with a large diameter which are arranged at a position orthogonal to said pair of iron cores with a small diameter, and winding coil portions which are assembled in an inner peripheral concave portion of said iron cores with a large diameter.

23. The electromagnetic vibrational diaphragm pump of claim 1, 2, 15 or 16, wherein the number of magnets of said vibrator is 4, the width dimension of 2 magnets at both end portions is about one half of the width dimension of 2 magnets at a central portion, said iron cores are an E shape, and the pole width dimensions of the center pole portion and the 2 side pole portions which face said magnets are nearly the same dimension together.

24. The electromagnetic vibrational diaphragm pump of claim 1, 2, 15 or 16, wherein said diaphragms with a small diameter are a corrugation type diaphragm.

2. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame, the electromagnet portion having left and right end portions;

a vibrator supported in said electromagnet portion and equipped with magnets, the vibrator having left and right ends;

left and right diaphragms with a large diameter and left and right diaphragms with a small diameter successively connected with respective ones of both the left and right ends of said vibrator;

left and right pump casing portions of said diaphragms with a large diameter and diaphragms with a small diameter fixed on respective ones of the left and right end portions of said electromagnet portion, said left and right pump casing portions including left and right pump chambers respectively corresponding to the diaphragms with a large diameter and diaphragms with a small diameter;

wherein by connecting the pump chambers of the left and right diaphragms with a large diameter and connecting the pump chambers of the left and right diaphragms with a small diameter with all of said pump chambers being connected in series, an air circuit of the pump has four compression steps in series so that medium pressure air of about 50 to 200 kPa is generated by pumping action.

15. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame, the electromagnet portion having left and right end portions;

a vibrator supported in said electromagnet portion and equipped with magnets, the vibrator having left and right ends;

left and right diaphragms with a large diameter and left and right diaphragms with a small diameter successively connected with respective ones of both the left and right ends of said vibrator;

left and right pump casings fixed on respective ones of the left and right end portions of said electromagnet portion, including pump chambers associated with respective ones of the large diameter and small diameter diaphragms and including suction chambers and discharge chambers formed in said pump casings arranged on a side-face side to a lateral direction of the pump chamber;

wherein by conducting low pressure air generated in the pump chamber of the left diaphragm with a large diameter to the pump chamber of the right diaphragm with a small diameter and conducting low pressure air generated in the pump chamber of the right diaphragm with a large diameter to the pump chamber of the left diaphragm with a small diameter, an air circuit of the pump has two air circuits as each with two compression steps in series for compressing air so that medium pressure air of about 50 to 200 kPa is generated by pumping action.

17. The electromagnetic vibrational diaphragm pump of claim 15 or 16, including a frame which is a resin molded article molded on the outer surface of said electromagnet, a first tank portion for vent and a second tank portion for vent which are connected with a left and right pump chambers and linked with a suction portion and a discharge portion, and ring shape grooves to which said diaphragms are installed are simultaneously molded, and said suction chamber and said first tank portion for vent and said discharge chamber and said second tank portion for vent which are connected with the pump chambers of said left and right pump casings are linked with passages which are formed by said frame and said pump casings.

18. The electromagnetic vibrational diaphragm pump of claim 15 or 16, wherein said magnets have a convex shape.

19. The electromagnetic vibrational diaphragm pump of claim 15 or 16, wherein the shape of a bottom portion of said pump chambers of said pump casings is a cone shape or a semispherical shape.

20. The electromagnetic vibrational diaphragm pump of claim 18, further comprising side plates which are arranged on a side face of said pump casings, said side plates having legs for installation.

16. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame, the electromagnet portion having left and right end portions;

a vibrator supported in said electromagnet portion and equipped with magnets, the vibrator having left and right ends;

left and right diaphragms with a large diameter and left and right diaphragms with a small diameter successively connected with respective ones of both the left and right ends of said vibrator;

left and right pump casings fixed on respective ones of the left and right end portions of said electromagnet portion, including suction chambers and discharge chambers formed in said pump casings arranged on a side-face side to a lateral direction of a pump chamber;

wherein by connecting the pump chambers of the left and right diaphragms with a large diameter and connecting the pump chambers of the left and right diaphragms with a small diameter with all of said pump chambers being connected in series, an air circuit of the pump has four compression steps in series so that medium pressure air of about 50 to 200 kPa is generated by pumping action.

25. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame, the electromagnet portion having left and right end portions;

a vibrator supported in said electromagnet portion and equipped with magnets, the vibrator having left and right ends;

left and right diaphragms with a large diameter and left and right diaphragms with a small diameter successively connected with respective ones of both the left and right ends of said vibrator;

left and right pump casing portions of said diaphragms with a large diameter and diaphragms with a small diameter fixed on respective ones of the left and right end portions of said electromagnet portion, said left and right pump casing portions including left and right pump chambers respectively corresponding to the diaphragms with a large diameter and diaphragms with a small diameter;

wherein the outer dimension of the pump casing portions for the diaphragms with a large diameter and the outer dimension of the pump casing portions for the diaphragms with a small diameter are substantially the same; and

wherein a suction chamber and a chamber which are formed on a pump casing portion for a diaphragm with a large diameter and a pump casing portion for a diaphragm with a small diameter are arranged at a side-face to a lateral direction of the pump chamber.

26. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame, the electromagnet portion having left and right end portions;

a vibrator supported in said electromagnet portion and equipped with magnets, the vibrator having left and right ends;

left and right diaphragms with a large diameter and left and right diaphragms with a small diameter connected with respective ones of both the left and right ends of said vibrator;

pump casings fixed on both the left and right end portions of said electromagnet portion, including suction chambers and discharge chambers formed in said pump casings adjoining a pump chamber;

wherein by conducting low pressure air generated in the pump chamber of the left diaphragm with a large diameter to the pump chamber of the right diaphragm with a small diameter and conducting low pressure air generated in the pump chamber of the right diaphragm with a large diameter to the pump chamber of the left diaphragm with a small diameter, an air circuit of the pump has two air circuits each with two compression steps in series for compressing air so that medium pressure air of about 50 to 200 kPa is generated by pumping action;

wherein the diaphragms connected with each of the left and right ends of said vibrator are a diaphragm with a large diameter and a diaphragm with a small diameter.

27. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame, the electromagnet portion having left and right end portions;

a vibrator supported in said electromagnet portion and equipped with magnets, the vibrator having left and right ends;

diaphragms with a large diameter and diaphragms with a small diameter connected with both said ends of said vibrator;

pump casings fixed on the left and right both end portions of said electromagnet portion, including pump chambers associated with respective ones of the large diameter and small diameter diaphragms and including suction chambers and discharge chambers formed in said pump casings adjoining the pump chambers;

wherein by connecting the pump chambers of the left and right diaphragms with a large diameter and connecting the pump chambers of the left and right diaphragms with a small diameter, all in series, air is compressed in four steps of one circuit as an air circuit of the pump so that medium pressure air of about 50 to 200 kPa is generated by pumping action;

wherein the diaphragms which are connected with each of the left and right ends of said vibrator are a diaphragm with a large diameter and a diaphragm with a small diameter.