Diaphragm pump
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsShinya Yamamoto, Makoto Yoshikawa, Takao Mishina
Life of this patent
Estimating the term…
Abstract
A diaphragm unit includes a plurality of diaphragms which are layered on top of each other. A case and the diaphragm unit define a pump chamber. The diaphragm unit has a first surface and a second surface on the side opposite to the first surface. A support member for supporting the diaphragm unit has a first support surface for supporting the first surface and a second support surface for supporting the second surface. The support member allows the diaphragms to slide between the first support surface and the second support in case here the diaphragm unit changes its form. Thus, the durability of the diaphragm is improved.
Claims11
A diaphragm pump, comprising:
- a case;
- a diaphragm unit comprising a plurality of diaphragms which are layered on top of each other, wherein the case and the diaphragm unit define a pump chamber, the diaphragm unit has a first surface and a second surface on the side opposite to the first surface, and wherein, when the diaphragm unit changes its form, the volume in the pump chamber increases or decreases, and as a result, a fluid flows into or out of the pump chamber;
- and
- a support member for supporting the diaphragm unit, wherein the support member has a first support surface for supporting the first surface and a second support surface for supporting the second surface, and the support member allows the diaphragms to slide between the first support surface and the second support surface in case where the diaphragm unit changes its form, wherein a minimum gap between the first support surface and the second support surface is set to a value no less than the thickness of the diaphragm unit.
A diaphragm pump, comprising:
- a case;
- a diaphragm unit comprising a plurality of diaphragms which are layered on top of each other, wherein the case and the diaphragm unit define a pump chamber, the diaphragm unit has a first surface facing the pump chamber and a second surface on the side opposite to the first surface, wherein, when the diaphragm unit changes its form, the volume in the pump chamber increases or decreases, and as a result, a fluid flows into or out of the pump chamber, and wherein it is possible for the diaphragms to slide against each other;
- a support member for supporting the diaphragm unit, wherein the support member has a first facing surface which faces the first surface and a second facing surface which faces the second surface;
- and
- a sealing member which is placed in at least one of a portion between the first surface and the first facing surface, and a portion between the second surface and the second facing surface,
- wherein a minimum gap between the first facing surface and the second facing surface is set to a value greater than the thickness of the diaphragm unit in the portion corresponding to the sealing member.
A diaphragm pump, comprising:
- a case;
- a diaphragm unit comprising a plurality of diaphragms which are layered on top of each other, wherein the case and the diaphragm unit define a pump chamber, the diaphragm unit has a first surface and a second surface on the side opposite to the first surface, and wherein, when the diaphragm unit changes its form, the volume in the pump chamber increases or decreases, and as a result, a fluid flows into or out of the pump chamber;
- and
- a support member for supporting the diaphragm unit, wherein the support member has a first support surface for supporting the first surface and a second support surface for supporting the second surface, and the support member allows the diaphragms to slide between the first support surface and the second support surface in case where the diaphragm unit changes its form, wherein the support member comprises a spacer which defines a minimum gap between the first support surface and the second support surface.
Dependencies are inferred from the claim text.