Electromagnetic vibrating type diaphragm pump

• US 20050254971A1
• Filed: 01/22/2003
• Published: 11/17/2005
• 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
• Granted Patent: US 7,661,933 B2
• Time in Patent Office: Days
• US Class Current: 417/413.100
• 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;

a vibrator supported in said electromagnet portion and equipped with magnets;

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

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

2. The electromagnetic vibrational diaphragm pump of claim 1, said pump casing portions further comprising:

a pump casing for said diaphragm with a large diameter;

a pump casing for said diaphragm with a small diameter; and

said pump chamber of the pump casing portion for the diaphragm with a large diameter and the pump chamber of the pump casing portion for the diaphragm with a small diameter adjoined each other and partitioned by the diaphragm with a small diameter.

3. The electromagnetic vibrational diaphragm pump of claim 1 or 2, 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, air is compressed at two steps of two circuits as air circuit so that medium pressure air is generated by pumping action.

4. The electromagnetic vibrational diaphragm pump of claim 1 or 2, wherein by connecting the pump chamber of the left and right diaphragms with a large diameter and connecting the pump chamber of the left and right diaphragms with a small diameter, air is compressed in four steps of one circuit as air circuit so that medium pressure air is generated by pumping action.

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

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

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

8. The electromagnetic vibrational diaphragm pump of claim 5 further comprising said first tank portion for vent separated by a partition portion.

9. The electromagnetic vibrational diaphragm pump of claim 5, wherein linking holes which are linked with hermetic space which is hermetically sealed by the fore-mentioned electromagnet portion and the diaphragm with a large diameter are formed on the fore-mentioned second tank portion for vent, and pressure which was generated in the fore-mentioned diaphragm with a large diameter is applied as back pressure on said diaphragm with a large diameter.

10. The electromagnetic vibrational diaphragm 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.

11. The electromagnetic vibrational diaphragm pump of claim 1 or 2, wherein the outer dimension of the pump casings for the diaphragm with a large diameter and that of the pump casings for the diaphragm with a small diameter are nearly the same.

12. The electromagnetic vibrational diaphragm pump of claim 11, wherein said suction chamber and said discharge chamber which are formed on said pump casings for said diaphragm with a large diameter and said pump casings for said diaphragm with a small diameter are arranged at a side-face side to a lateral direction of the pump chamber.

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

14. The electromagnetic vibrational diaphragm pump of claim 11, wherein the surface shape of said magnets indicates a convex shape.

15. The electromagnetic vibrational diaphragm pump of claim 11, wherein the shape of bottom portion of the pump chambers of the pump casings for said diaphragm with a large diameter and the pump casings for the diaphragm with a small diameter is a cone shape or a semispherical shape.

16. The electromagnetic vibrational diaphragm pump of claim 13, wherein side plates which are arranged on the side face of said pump casings for the diaphragm with a small diameter have legs for installation.

23. The electromagnetic vibrational diaphragm pump of claim 1, 2, 17 or 18, wherein said electromagnet consists of iron cores and winding coil portions which are assembled in the inner peripheral concave portion of said iron cores.

24. The electromagnetic vibrational diaphragm pump of claim 1, 2, 17 or 18, wherein said electromagnet consists of 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 the inner peripheral concave portion of said iron cores with a large diameter.

25. The electromagnetic vibrational diaphragm pump of claim 1, 2, 17 or 18, 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.

26. The electromagnetic vibrational diaphragm pump of claim 1, 2, 17 or 18, wherein said diaphragms with a small diameter are a corrugation type diaphragm.

17. An electromagnetic vibrational diaphragm pump comprising:

an electromagnet portion having an electromagnet arranged in a frame;

a vibrator supported in said electromagnet portion and equipped with magnets;

diaphragms connected with both ends of said vibrator; and

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

18. The electromagnetic vibrational diaphragm pump of claim 17, wherein the diaphragms which are linked with the both end portions of said vibrator are the diaphragm with a large diameter and the diaphragm with a small diameter.

19. The electromagnetic vibrational diaphragm pump of claim 17 or 18, wherein said frame is a resin molded article molded on the outer surface of said electromagnet, said first tank portion for vent and said second tank portion for vent which are connected with said left and right pump chambers and linked with said suction portion and said 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.

20. The electromagnetic vibrational diaphragm pump of claim 17 or 18, wherein the surface shape of said magnets indicates a convex shape.

21. The electromagnetic vibrational diaphragm pump of claim 17 or 18, wherein the shape of bottom portion of said pump chambers of said pump casings is a cone shape or a semispherical shape.

22. The electromagnetic vibrational diaphragm pump of claim 20, wherein side plates which are arranged on the side face of said pump casings have legs for installation.